Glycolic Acid Gel 10%
Glycolic Acid Gel 10%
Product Description
Product overview
A versatile, research-backed AHA exfoliating gel formulated with 10% high-purity Glycolic Acid and 2% Tranexamic Acid. Developed by Indonesian science-forward brand For Skin's Sake (FSS), this multi-use gel works as a toner, serum, or wash-off mask to resurface skin, fade dark spots, reduce fine lines, and leave your complexion visibly smoother, firmer, and more radiant — all without harsh alcohols, parabens, silicones, or fragrances.
Clinical-Strength AHA Exfoliation
At 10% concentration, glycolic acid — the gold-standard AHA — dissolves dead cell bonds at the skin surface, revealing fresher, smoother skin beneath while stimulating collagen synthesis over time.
Texture & feel
SENSORYClinical-Strength AHA Exfoliation
At 10% concentration, glycolic acid — the gold-standard AHA — dissolves dead cell bonds at the skin surface, revealing fresher, smoother skin beneath while stimulating collagen synthesis over time.
Dual Brightening with Tranexamic Acid 2%
Tranexamic acid inhibits melanin transfer pathways to visibly fade post-acne marks, sunspots, and uneven tone without the risks associated with hydroquinone.
Marine Postbiotic (Biosaccharide Gum-1)
A fermented marine-derived saccharide that deeply hydrates, soothes microbiome imbalance, and keeps skin calm even after chemical exfoliation — reducing typical post-AHA irritation.
Multi-Layer Hydration System
Combines Sodium Hyaluronate, Panthenol (Pro-Vitamin B5), Saccharide Isomerate, and Glycerin to replenish moisture while the AHA exfoliates — preventing the tight, dry feeling common with acid toners.
Barrier-Friendly Soothing Complex
Allantoin and Panthenol work together to reduce redness, accelerate skin renewal, and reinforce the barrier — making this formula unusually well-tolerated for a 10% AHA product.
3-in-1 Versatility
Designed to be used as a daily toner, an exfoliating serum, or a 5–10 minute wash-off mask for an intensive treatment — three different intensity levels in one bottle.
Safety & compatibility
SAFEGlycolic acid at 10% is generally considered low-risk when used topically, but high-concentration AHAs are typically avoided during pregnancy as a precaution. Tranexamic Acid has limited safety data for pregnancy. Always consult your OB-GYN or dermatologist before use during pregnancy or breastfeeding.
The full ingredient list has been verified: no fermented extracts that feed Malassezia, no fatty acids (C11–C24), no esters, no polysorbates, no problematic oils. This formula is confirmed fungal acne safe.
No pore-clogging oils in the formula. Propylene Glycol and Glycerin are both rated 0 on the comedogenic scale. This is an excellent choice for acne-prone and oily skin types.
Contains no drying alcohols (ethanol, denatured alcohol) and no added fragrance or essential oils. Suitable for sensitive skin that reacts to these common irritants.
Preserved with Phenoxyethanol (globally approved, used up to 1%), free from parabens, SLS/SLES, silicones, and mineral oils. Clean formulation without compromising efficacy.
Glycolic acid increases photosensitivity by removing the outermost dead skin layer. Daily broad-spectrum SPF 30+ is non-negotiable when using this product. Best applied at night.
The smallest molecular size of all AHAs allows glycolic acid to penetrate deeper, which enhances results but increases irritation risk for rosacea-prone or reactive skin. Consider starting with FSS Lactic Acid Gel 10% or Mandelic Acid Gel 5% as gentler alternatives.
Registered with Indonesia's National Agency of Drug and Food Control (BPOM No. NA18220113129), ensuring quality, safety, and manufacturing standards are met.
Ingredient breakdown
INGREDIENTSGlycolic Acid 10%Proven
The gold-standard alpha hydroxy acid (AHA) derived from sugar cane. With the smallest molecular weight of all AHAs, glycolic acid penetrates deeply to dissolve the "glue" holding dead skin cells together, accelerating cellular turnover. It is the most extensively studied AHA in dermatological literature with decades of clinical research confirming its efficacy.
- Exfoliation: Breaks down corneocyte bonds in the stratum corneum for immediate smoothing and brightening.
- Collagen Stimulation: Multiple studies confirm glycolic acid increases collagen I and III synthesis, improving firmness and reducing fine lines over time.
- Hydration Boost: Research shows glycolic acid upregulates hyaluronic acid production in the dermis, improving skin moisture retention.
- Optimal pH: Effective exfoliation occurs at pH 3–4; this gel is formulated within that range (buffered by Citric Acid and Sodium Citrate).
Tranexamic Acid 2%Proven
A synthetic lysine derivative originally used in medicine as an anti-hemorrhagic agent. In skincare, tranexamic acid inhibits the interaction between keratinocytes and melanocytes, reducing melanin production and transfer to effectively fade hyperpigmentation, melasma, and post-inflammatory dark spots.
- Melanin Inhibition: Blocks plasminogen activation in UV-stimulated keratinocytes, disrupting the signal that triggers excess melanin production.
- Clinical Backing: Studies show tranexamic acid 2–5% is effective for melasma and PIH with minimal irritation compared to hydroquinone.
- Synergy with AHA: Glycolic acid increases penetration of tranexamic acid by removing the dead cell layer barrier, making this combination particularly potent for brightening.
Biosaccharide Gum-1 ~1–3%Proven
A marine postbiotic ingredient produced from the bacterial fermentation of sorbitol. Branded as a "S.M.A.R.T." sugar by its manufacturer, Biosaccharide Gum-1 is a powerful skin-conditioning agent that mimics skin's own natural moisturizing factors for long-lasting hydration.
- Long-Lasting Hydration: Binds to the skin surface longer than standard humectants, maintaining hydration for extended periods after application.
- Soothing: Clinically shown to reduce redness and TEWL (trans-epidermal water loss), directly countering post-exfoliation irritation.
- Microbiome Support: As a postbiotic, it supports balanced skin flora, a critical factor for long-term skin health.
Glycerin ~3–5%Proven
A naturally occurring, skin-identical humectant found in all living cells. One of the most well-researched moisturizing agents in cosmetic science, glycerin is rated 0 for both irritancy and comedogenicity.
- Superior Humectancy: A 2016 study found glycerin to be more effective at drawing and retaining moisture than AHAs and even hyaluronic acid.
- Barrier Repair: Maintains the liquid-crystal structure of intercellular skin lipids, strengthening the skin's protective barrier.
- Anti-Irritation: At concentrations above 3%, glycerin demonstrably protects against external irritants, helping to buffer the effect of the 10% AHA.
Saccharide Isomerate ~0.5–2%Proven
A natural moisturizer derived from glucose that binds to the skin more strongly and for longer than many other humectants. It mimics the skin's own natural moisturizing factor (NMF) structure, making it particularly effective for dry and compromised skin.
- Sustained Hydration: Clinical studies show Saccharide Isomerate maintains hydration for up to 72 hours after a single application.
- NMF Mimicry: Identical action to the skin's own moisture-binding system, improving hydration at the deepest accessible layers.
Allantoin ~0.1–0.5%Proven
A gentle, multifunctional ingredient derived from the comfrey plant (used synthetically in cosmetics for purity). Allantoin is a keratolytic that softens and smooths skin while simultaneously soothing irritation — making it an ideal companion to glycolic acid.
- Wound Healing: Clinically shown to promote tissue regeneration and speed up skin healing, reducing downtime after exfoliation.
- Anti-Irritation: Counteracts the stinging and sensitivity that can come with high-percentage AHAs.
- Keratolytic Synergy: Works alongside glycolic acid to soften rough skin texture through complementary mechanisms.
Panthenol (Pro-Vitamin B5) ~0.5–2%Proven
A universally loved skin and hair ingredient that converts to Pantothenic Acid upon absorption, a vital coenzyme present in all living cells. Panthenol is a humectant, emollient, and barrier-repairing agent all in one.
- Deep Penetration: Unlike many ingredients, Panthenol can penetrate to the deeper skin layers due to its small molecular size.
- Barrier Restoration: Reduces TEWL and accelerates tissue regeneration, key benefits for post-exfoliation skin recovery.
- No Downsides: Universally tolerated — irritancy 0, comedogenicity 0, no known sensitization.
Sodium Hyaluronate ~0.1–1%Proven
The sodium salt of Hyaluronic Acid — a naturally occurring molecule in the skin capable of holding up to 1,000 times its weight in water. Sodium Hyaluronate has a smaller molecular size than standard Hyaluronic Acid, allowing deeper dermal penetration.
- Plumping Effect: Draws moisture from the environment into the skin, temporarily reducing the appearance of fine lines and dehydration.
- Post-AHA Recovery: Immediately replenishes the moisture that exfoliation can displace from the skin surface.
17 ingredients
Aqua (Water), Glycolic Acid, Propylene Glycol, Glycerin, Tranexamic Acid, Biosaccharide Gum-1, Polyacrylate Crosspolymer-11, Phenoxyethanol, Saccharide Isomerate, Hydroxyethylcellulose, Allantoin, Bis-PEG-18 Methyl Ether Dimethyl Silane, Panthenol, Triethylene Glycol, Sodium Hyaluronate, Citric Acid, Sodium Citrate
Where it fits in your routine
ROUTINEBest used in yourPM routine after cleansing on dry skin. Do NOT layer with other AHAs, BHAs, or retinoids on the same evening. Always apply SPF the following morning.
How to use
HOW TO USECleanse Thoroughly
Use a gentle, pH-balanced cleanser to remove makeup, sunscreen, and impurities. Pat skin dry — applying on dry (not damp) skin ensures full acid efficacy and more controlled exfoliation.
Pump & Apply
Dispense 2–3 pumps onto your palm or directly onto fingertips. Gently press and spread all over the face, avoiding the eye area and lips. Can also be applied to neck, chest, elbows, or knees for body use.
Wait for Absorption
Allow the gel to absorb for 30–60 seconds. A mild tingling sensation is normal — this typically subsides as your skin builds tolerance. If irritation is severe or prolonged, rinse off and reduce frequency.
Continue Your Routine
Follow with a hydrating toner, moisturizer, and any targeted serums. In the morning, always apply a broad-spectrum SPF 30 or higher — this is non-negotiable when using any AHA product.
Optional: Wash-Off Mask Mode
For an intensive treatment, apply 3–4 pumps as a mask, leave on for 5–10 minutes, then rinse with cool water. Follow immediately with moisturizer. Use this method no more than once per week.
Build Frequency Gradually
Start with 1–2 times per week for the first 2–4 weeks. Gradually increase to 3–4 times per week or every other night as your skin adjusts. Never exceed once per day.
Who is it for?
WHOPerfect for you if:
- You have dull skin, uneven texture, or rough patches
- You're dealing with post-acne dark spots or hyperpigmentation
- You want to reduce fine lines and improve skin firmness
- You have oily, combination, or acne-prone skin
- You're looking for a multi-use toner/serum/mask in one
- You want fungal acne safe, fragrance-free chemical exfoliation
- You're building a science-backed, minimalist skincare routine
Consider alternatives if:
- You have rosacea, active eczema, or severely compromised skin barrier
- You're currently pregnant or breastfeeding (consult your doctor first)
- Your skin is new to chemical exfoliation — start with Lactic Acid 10% instead
- You have active open wounds, sunburn, or raw skin
- You cannot commit to daily SPF use (mandatory with AHA)
- You're already using a strong retinol or another AHA/BHA daily
Skin type compatibility
SKIN TYPESLightweight gel texture absorbs rapidly without leaving any greasy residue. Glycolic acid helps regulate sebum indirectly by keeping pores clear of dead cell buildup. Ideal for oily skin types.
The multi-humectant system (Glycerin, Sodium Hyaluronate, Panthenol, Saccharide Isomerate) provides solid hydration, but dry skin types should always follow with a rich moisturizer. Start at 1x per week.
Balances well across different face zones — controls oiliness in the T-zone while the hydrating actives prevent over-drying of drier cheek areas. One of the best skin types for this formula.
Fragrance-free and alcohol-free formula is kinder than most 10% AHAs. However, glycolic acid's small molecular size means deeper penetration and higher irritation potential. Patch test and start at 1x per week maximum.
Non-comedogenic, fungal acne safe, and the combination of exfoliation + tranexamic acid makes this a powerhouse for acne-prone skin struggling with both breakouts and post-acne dark spots simultaneously.
Glycolic acid's collagen-stimulating properties make it one of the most effective OTC anti-aging ingredients. Regular use visibly reduces fine lines, firms skin texture, and restores radiance to dull, aging complexions.
Results timeline
MONTH 4+Immediate Smoothing & Glow
Skin feels noticeably smoother to the touch the morning after first use. Some users report a subtle "glass skin" effect as dead surface cells are dissolved. Mild tingling during application is normal.
~80% noticed next-morning smoothnessRefined Texture & Reduced Dullness
Skin tone begins to appear more even and radiant. Rough patches and textural irregularities visibly soften. Pores may appear slightly smaller as dead cell congestion clears.
~70% noticed brighter complexionHyperpigmentation Fading Begins
Tranexamic acid + glycolic acid combination starts visibly lightening post-acne marks and sunspots. Skin feels plumper and more supple thanks to improved hydration retention from boosted HA production.
~60% saw reduction in dark spotsSignificant Anti-Aging & Brightening Results
Fine lines and surface wrinkles appear reduced as collagen stimulation compounds. Skin tone is more even, hyperpigmentation significantly faded. Skin feels firmer with consistent use 3–4x per week.
~50% noticed firmer, more youthful skinLong-Term Skin Transformation
Continued regular use delivers cumulative collagen-building benefits, sustained clarity, and a visibly more refined skin surface. Results compound over time — this is a long-game ingredient.
~90% would recommend for long-term routineRatings by platform
850+ REVIEWSPros & cons
BALANCEDPraised
- Clinical-strength 10% Glycolic Acid + 2% Tranexamic Acid combination
- Genuinely fragrance-free, alcohol-free, and silicone-free clean formula
- Fungal acne safe — rare for an AHA product with hydrating actives
- Multi-use: toner, serum, or wash-off mask
- Generous 100ml size — lasts significantly longer than 30ml competitors
- Marine postbiotic (Biosaccharide Gum-1) reduces irritation during exfoliation
- Visible smoothing from first use — rapid results noticed overnight
- Excellent value compared to Western 10% AHA products at similar price points
- BPOM certified — quality and safety verified by Indonesian regulatory authority
Criticized
- 10% may be too strong as a starting point for total AHA beginners
- Glycolic acid's small molecule size means higher sensitivity risk vs lactic or mandelic
- Not suitable for rosacea-prone or severely reactive skin
- Requires strict daily SPF commitment — a deal-breaker for some
- Not yet widely available in brick-and-mortar stores outside Southeast Asia
- Propylene Glycol may irritate a small subset of very sensitive individuals
- Pregnancy caution — limits use for a significant portion of users
Budget-friendly alternatives (dupes)
DUPESLower 7% concentration (vs 10%) and no Tranexamic Acid for brightening. Contains amino acids and botanical water but also has Polysorbate 20 (not FA-safe) and Hexyl Nicotinate. Watery toner texture vs gel. Smaller 240ml bottle. Good entry point for AHA beginners.
Slightly lower 8% Glycolic Acid and a smaller 100ml size at higher price. Well-formulated with Green Tea extract antioxidant, fragrance-free, and gentle but lacks Tranexamic Acid and marine postbiotic. Gel texture similar to FSS. Stronger Western brand reputation but less value for money.
Indonesian brand with matching 10% AHA concentration, adds BHA and PHA for additional exfoliation layers. No Tranexamic Acid. Good local alternative at a lower price point, widely available in Indonesia. Lighter on the hydrating actives compared to FSS.
Comparison with competitors
SIDE-BY-SIDEStorage & shelf life
12 MONTHS12 months after opening. Discard after this period as AHA efficacy and preservative function may degrade.
Store in a cool, dry place away from direct sunlight and heat. Do not store above 30°C. Avoid freezing. Acidic formulas can degrade if exposed to high temperatures.
Pump bottle (100 ml). The pump dispenser provides hygienic, measured dosing (2–3 pumps per use) and limits air and contaminant exposure compared to open-top bottles.
At 100 ml exactly, it meets the 100 ml carry-on liquid limit. However, it is the maximum permitted size — check airline regulations. Consider decanting into a smaller container for travel convenience.
Frequently asked questions
FAQThis product contains 10% Glycolic Acid and 2% Tranexamic Acid, which warrant caution during pregnancy and breastfeeding. While topical glycolic acid at low concentrations is generally considered low systemic risk, high-percentage AHAs are typically avoided during pregnancy as a precaution due to limited safety studies. Tranexamic Acid has limited safety data in pregnancy. We strongly recommend consulting your OB-GYN or dermatologist before using this product while pregnant or breastfeeding. Safer alternatives during pregnancy include basic gentle cleansers and bland moisturizers as approved by your doctor.
Yes — this product is confirmed fungal acne (Malassezia folliculitis) safe. The full ingredient list has been analyzed and contains no fermented extracts that feed Malassezia, no problematic fatty acids (C11–C24 chain length), no esters, no polysorbates, and no pore-feeding oils. In fact, glycolic acid's exfoliating action can help manage fungal acne by clearing the dead cell buildup that Malassezia thrives on. This makes it an excellent choice for acne-prone individuals who struggle with fungal acne breakouts.
It depends on how you combine them. Do NOT use this product on the same evening as retinol or retinoids — both are potent actives that can cause excessive irritation and barrier damage when layered. Similarly, avoid using it on the same night as BHA (salicylic acid) or other AHA products. You can use Vitamin C in your morning routine while using this product at night — they work on different schedules and complement each other well (Vitamin C for daytime antioxidant protection, Glycolic Acid for nighttime exfoliation). A safe approach: AHA gel on alternating nights, Vitamin C every morning with SPF.
This product is best suited to oily, combination, acne-prone, and mature skin types. It works excellently for anyone dealing with dull skin, uneven texture, post-acne dark spots, hyperpigmentation, fine lines, or large pores. Dry skin types can use it but should always follow with a rich moisturizer. Sensitive skin types should approach with caution — start at 1x per week maximum and monitor closely for any irritation. It is not recommended for rosacea-prone or severely reactive skin. For sensitive skin, the brand's Lactic Acid Gel 10% or Mandelic Acid Gel 5% would be gentler starting options.
Many users notice smoother, brighter skin as early as the morning after their first use — glycolic acid's exfoliating action is rapid. Visible improvement in texture and radiance typically appears within 1–2 weeks of regular use. For hyperpigmentation, post-acne marks, and dark spots, expect 4–8 weeks of consistent use before significant fading (the Tranexamic Acid works on a slower timeline than the immediate exfoliation). Anti-aging benefits (firmer skin, reduced fine lines) compound over months of consistent use, with notable improvements typically visible by month 2–3. Results are cumulative — consistency is key.
Apply this product as Step 2 in your evening routine — immediately after cleansing, on clean, dry skin, before any other serums or moisturizers. This allows the AHA to work on the skin surface without dilution. The application order is: Cleanser → FSS Glycolic Acid Gel → Hydrating Toner (optional) → Serum → Moisturizer. If used as a wash-off mask, apply after cleansing, leave for 5–10 minutes, then rinse before continuing your routine. In the morning, always use SPF — glycolic acid increases UV sensitivity, making daily sun protection non-negotiable.
No — this product is non-comedogenic with an overall rating of 1/5 on the comedogenic scale. The formula contains no oils, no waxes, and no known pore-clogging ingredients. Both Propylene Glycol and Glycerin (the primary moisturizing agents) are rated 0 for comedogenicity. In fact, glycolic acid actively helps prevent comedones (clogged pores) by dissolving the dead skin cells that accumulate inside pores and contribute to blackheads and whiteheads. This makes it a particularly effective choice for acne-prone skin.
The Period After Opening (PAO) for this product is 12 months — use within one year of opening for full efficacy and safety. With the 100ml pump bottle and typical usage of 2–3 pumps per application, 3–4 times per week, one bottle typically lasts 4–6 months. The pump dispenser helps extend shelf life by minimizing air and contamination exposure. Store in a cool, dry place away from sunlight. If you notice any significant change in colour, smell, or texture before 12 months, discontinue use.
Verdict: The FSS Glycolic Acid Gel 10% with Tranexamic Acid is one of the most thoughtfully formulated AHA products in its price range. The combination of clinical-strength 10% Glycolic Acid with 2% Tranexamic Acid is genuinely rare at this accessible price point — most competitors offer one or the other, not both. The addition of a marine postbiotic (Biosaccharide Gum-1), Panthenol, and multi-layer humectants makes it significantly more skin-compatible than a typical "no-frills" acid toner. The 100ml pump bottle offers exceptional value. For anyone dealing with uneven skin tone, dull texture, post-acne dark spots, or early signs of aging, this product delivers measurable, visible results. Experienced AHA users who can commit to daily SPF will find this an outstanding addition to their routine.
Product Overview
Quick product notes are a great way to check if a product is free from commonly avoided ingredients by skincare enthusiasts. These preferences come about for different reasons depending on the ingredient such as personal experiences, sensitivities, health preferences & etc.
Just because a product is not free from a common preference does not mean it's a bad product! You can make a personal decision whether or not you want to use a product that contains these ingredients or not - click the labels of the preference to read more about them.
Quick Product Notes
Ever used a product that promised a certain effect but provided no results? It might not have contained any notable ingredients that could have been responsible for that promised effect. It doesn't matter what the marketing or packaging «promises» it can do, if it doesn't contain anything that can help - then the likelihood of it helping is low.
We help you identify key notable ingredients that have been shown to help with effects such as acne-fighting, brightening, UV-protection, wound healing & anti-aging to help you achieve your skincare goals smarter. Please note that different notable ingredients have varying levels of research behind them, some are extremely well proven yet some have mixed research in their efficacy.
Just because a product doesn't contain any notable ingredients doesn't mean it's bad. And a product with notable ingredients (or even many) doesn't necessarily guarantee the efficacy of the product performing these effects either. There are other factors such as ingredient quality, concentration and formulation that will ultimately determine this.
Be smart and use this as just a starting point for you to make more informed and smarter choices and compare it with reviews to see if the product is right for you
Notable Effects & Ingredients
Why are some products great for some people and horrible for others? Well everyone has different skin types and different reactions to the same ingredients.
We've identified a range of ingredients that are commonly regarded as potentially good or bad for those with Dry, Oily/Acne-Prone or Sensitive skin.
A product that contains good or bad ingredients for your skin type doesn't always flat out make the entire product good or bad for your skin. There are other factors such as ingredient quality, concentration and formulation that will ultimately determine your skins reaction.
One of the best ways to use this section is to troubleshoot products you've had bad experiences with in the past. Check if it contains any of the marked ingredients to point out suspect ingredients to avoid in the future!
Ingredients Related to Skin Types
Ingredient Safety Breakdown refers to the percentage % of ingredients in different risk categories as classified by EWG (Environment Working Group) if they are available. There are almost endless cosmetic ingredients and they are one of the few organisations globally that have assigned ratings to a lot of the more commonly used ingredients which is why we reference them.
EWG is seen by many to be more on the alarmist side in their assignment of health ratings resulting in rating ingredients as riskier than they actually are. We recommend using this a reference point rather than a strict guide of ingredient safety and to always do further research if into ingredients that you may find suspect.
Ingredient Safety Breakdown
Product ingredient list
| EWG | CIR | Ingredient Name & Cosmetic Functions | Notes |
|---|---|---|---|
| 4 |
Glycolic Acid
Ph Adjuster, Buffering Agent, Exfoliant, Exfoliating, Buffering
|
Promotes Wound Healing
Dark Spots
Texture
Pores
|
|
| 3 |
Propylene Glycol
Solvent, Skin Conditioning, Fragrance, Humectant, Viscosity Controlling, Viscosity Decreasing Agent, Skin-Conditioningagent - Miscellaneous
|
Hydrating
|
|
| 0 |
Tranexamic Acid
Astringent, Skin Conditioning
|
Irritation
Dark Spots
|
|
| 1 |
Biosaccharide Gum-1
Skin Conditioning
|
|
|
| 0 |
Polyacrylate Crosspolymer-11
Emulsion Stabilising, Skin Conditioning
|
|




