JUST 20% Glycolic Acid Toning Solution
JUST 20% Glycolic Acid Toning Solution
Product Description
Product overview
A potent 20% glycolic acid exfoliating toning solution that accelerates skin cell renewal, dissolves dead skin buildup, and reveals a brighter, smoother, and more youthful complexion. Designed for face and neck with a minimalist 8-ingredient formula.
Powerful Exfoliation
20% glycolic acid — the highest concentration AHA — dissolves dead skin cell bonds for deep, effective exfoliation and visible skin renewal.
Texture & feel
SENSORYPowerful Exfoliation
20% glycolic acid — the highest concentration AHA — dissolves dead skin cell bonds for deep, effective exfoliation and visible skin renewal.
Smallest AHA Molecule
Glycolic acid has the smallest molecular size among all AHAs, allowing it to penetrate deeper into the skin for enhanced effectiveness.
Minimalist Formula
Only 8 clean ingredients — no fragrances, oils, parabens, or silicones. Straightforward formulation with nothing unnecessary.
Exceptional Value
Professional-grade 20% glycolic acid concentration at an affordable price point, making potent skincare accessible to everyone.
Safety & compatibility
SAFEGlycolic acid at low concentrations (under 10%) is generally considered safe during pregnancy. At 20%, this product exceeds the typically recommended limit. Consult your OB-GYN before use.
Free from oils, fatty acids, ferments, esters, and polysorbates. This formula does not feed malassezia yeast and is safe for fungal acne-prone skin.
Comedogenic rating of 0/5. Oil-free, silicone-free formula with no pore-clogging ingredients. Will not contribute to breakouts.
AHAs increase photosensitivity. Always apply a broad-spectrum SPF 30+ sunscreen during the day and for at least one week after use. Avoid direct sun exposure.
Other exfoliating acids (BHA, AHA, PHA), retinoids (retinol, tretinoin), or vitamin A derivatives. Combining may cause over-exfoliation, redness, and irritation.
Apply 1–2 drops to the inner elbow, wait 15 minutes, rinse. If no irritation after 24 hours, the product is safe to use on your face.
Ingredient breakdown
INGREDIENTSGlycolic Acid 20%Proven
The gold standard AHA with the smallest molecular weight, enabling the deepest skin penetration among all alpha hydroxy acids. At 20%, this is a high-potency concentration that delivers professional-grade exfoliation.
- Exfoliation: Dissolves the bonds between dead skin cells (desmosomes), allowing them to shed and reveal fresh skin underneath.
- Collagen Stimulation: Clinical studies show glycolic acid stimulates collagen production with long-term use, helping to firm and thicken the skin over time.
- Hydration Boost: Increases natural hyaluronic acid production in the skin, improving hydration from within.
- Clinical Data: Concentrations of 5–20% glycolic acid have been shown effective in clinical studies for texture improvement and anti-aging.
Propylene Glycol HumectantProven
A lightweight humectant that helps skin retain moisture and enhances the delivery of glycolic acid into the skin. Also extends product shelf life with mild antimicrobial properties.
- Function: Draws water to the skin surface, helping to counteract the drying effect of glycolic acid.
- Penetration Enhancer: Aids in delivering glycolic acid more effectively into the epidermis.
Potassium Hydroxide pH AdjusterFunctional
Used to partially neutralize the glycolic acid and adjust the formula's pH to an effective yet tolerable range. Completely consumed in the neutralization reaction and not present as free KOH in the final product.
- Role: Balances pH to optimize the ratio between free acid (effective) and salt form (less irritating).
- Safety: Fully reacted during formulation — does not remain as caustic potash in the product.
Xanthan Gum StabilizerFunctional
A natural polysaccharide that acts as a thickener and stabilizer, giving the solution its smooth consistency and preventing separation. Non-toxic, non-irritating, and commonly used in food products.
- Function: Provides viscosity so the solution stays where applied rather than running off the skin.
8 ingredients
Water / Aqua, Glycolic Acid, Propylene Glycol, Potassium Hydroxide, Xanthan Gum, PPG-1-PEG-9 Lauryl Glycol Ether, Phenoxyethanol, Disodium EDTA.
Where it fits in your routine
ROUTINEUse in your PM routine only, 2–3 times per week. Apply to clean, dry skin. Rinse off after 10–15 minutes. Follow with a nourishing oil (e.g., argan oil) or moisturizer to prevent dryness. Always wear SPF 30+ the following day.
How to use
HOW TO USECleanse & Dry
Wash your face with a gentle cleanser and pat completely dry. The skin must be fully dry before application to avoid uneven acid distribution.
Apply 4–5 Drops
Dispense 4–5 drops onto your fingertips and gently massage across the face and neck, avoiding the eye area and any broken or irritated skin.
Wait 10–15 Minutes
Leave the solution on your skin for 10–15 minutes. A mild tingling sensation is normal. If you experience burning or discomfort, rinse off immediately.
Rinse Thoroughly
Rinse your face thoroughly with lukewarm water and pat dry. Wait until the skin is completely dry before applying the next product.
Moisturize & Protect
Follow with a nourishing oil or moisturizer. The brand recommends pairing with Revox B77 JUST Argan Oil or Blend Oil to prevent over-drying. Apply SPF 30+ in the morning.
Who is it for?
WHOPerfect for you if:
- You have dull, rough, or uneven skin texture
- You want to reduce the appearance of dark spots and hyperpigmentation
- You have clogged pores and want a deeper exfoliation
- You prefer a minimalist, clean formula with few ingredients
- You have experience with AHAs and want a stronger concentration
- You want an affordable, professional-grade acid treatment
Consider alternatives if:
- You have very sensitive, reactive, or rosacea-prone skin
- You are new to chemical exfoliants (start with 7% glycolic acid instead)
- You are pregnant or breastfeeding (consult your doctor first)
- You use retinoids or other direct acids in your current routine
- You cannot commit to daily SPF 30+ sunscreen use
- You have active sunburn, wounds, or inflamed skin
Skin type compatibility
SKIN TYPESOil-free formula that helps unclog pores, reduce shine, and control sebum. Ideal for oily skin that can tolerate strong exfoliation.
Great for targeting congested T-zone areas. Follow with a moisturizer on drier areas to maintain balance.
Non-comedogenic and fungal acne safe. Clears clogged pores and helps fade post-acne marks. Pair with a gentle moisturizer.
Effective for maintaining smooth, radiant skin. Use 2–3 times per week for a brightness boost without over-exfoliating.
20% concentration may be too strong for dry skin. If used, always follow with a rich moisturizer or oil. Consider the 7% version instead.
Not recommended. The 20% concentration is too potent for sensitive or rosacea-prone skin. Try Revox B77 JUST Glycolic Acid 7% or Lactic Acid + HA instead.
Results timeline
MONTH 3+Immediate Smoothing & Brightness
Skin feels noticeably smoother after the first few applications. Dead skin cells are removed, revealing a fresher surface. Some users may experience mild tingling or slight purging.
70% noticed smoother textureImproved Tone & Reduced Congestion
Pores appear less congested, blackheads diminish, and skin tone starts to even out. Post-acne marks begin to fade. Skin looks visibly more radiant and refreshed in the morning.
65% noticed fewer blackheadsVisible Dark Spot Fading
Hyperpigmentation and dark spots show measurable improvement. Fine lines appear less prominent as collagen stimulation takes effect. Overall complexion looks brighter and more youthful.
55% noticed fading dark spotsLong-Term Anti-Aging Benefits
Continued collagen production improves skin firmness and elasticity. Fine lines and wrinkles are visibly reduced. Skin texture is significantly refined with consistent use.
50% noticed improved firmnessRatings by platform
1K+ REVIEWSPros & cons
BALANCEDPraised
- High-potency 20% glycolic acid at an extremely affordable price
- Clean, minimalist 8-ingredient formula with no unnecessary fillers
- Visibly smoother, brighter skin after just a few uses
- Absorbs instantly with no sticky residue
- Fragrance-free and fungal acne safe
- Effective for reducing blackheads, dark spots, and fine lines
- Cruelty-free and paraben-free formulation
Criticized
- Small 30ml bottle runs out fast (roughly 4–6 weeks of use)
- Too strong for sensitive skin or AHA beginners
- Requires rinsing off after 10–15 minutes (not a leave-on treatment)
- No soothing ingredients (unlike competitors with aloe or green tea)
- Must use SPF daily — increases sun sensitivity significantly
- Cannot combine with retinol or other acids in the same routine
Budget-friendly alternatives (dupes)
DUPESLower concentration (7% vs 20%) but much larger bottle (240ml). Leave-on formula with added soothing ingredients like aloe vera, ginseng, and Tasmanian Pepperberry. Better for beginners and daily use.
Gentler 5% glycolic acid with aloe vera and ginseng. Larger 250ml bottle. pH of 4–5 is higher, making it less potent but also less irritating. Better for daily, gentle exfoliation.
Same brand, lower strength. 250ml bottle with added hyaluronic acid, aloe vera, panthenol, and soy protein. Gentler daily-use formula for those who find 20% too intense.
Comparison with competitors
SIDE-BY-SIDEStorage & shelf life
12 MONTHS12 months after opening
Store in a cool, dry place away from direct sunlight. Keep tightly closed after each use.
Dark glass dropper bottle (30ml) that protects the formula from light degradation
Yes — 30ml is well under the 100ml carry-on liquid limit
Frequently asked questions
FAQGlycolic acid at concentrations below 10% is generally considered safe during pregnancy and breastfeeding by dermatologists. At 20%, this product exceeds that recommended threshold. While glycolic acid has minimal systemic absorption through the skin, most healthcare providers advise caution with higher concentrations during pregnancy. Consult your OB-GYN or dermatologist before using this product if you are pregnant, planning to become pregnant, or breastfeeding. A safer alternative would be Revox B77 JUST Glycolic Acid 7%.
Yes, this product is fungal acne safe. The formula contains no oils, fatty acids, ferments, esters, or polysorbates that feed malassezia yeast. With only 8 clean ingredients, it is one of the safest exfoliants for those with fungal acne. Glycolic acid itself can help by removing dead skin cells that trap yeast, potentially improving fungal acne symptoms.
No — do not combine this product with other direct acids (AHA, BHA, PHA), retinoids (retinol, tretinoin, retinal), or vitamin A derivatives in the same routine. Combining these can cause excessive exfoliation, redness, irritation, and a damaged skin barrier. If you want to use both AHA and retinol, alternate them on different nights. Vitamin C (L-ascorbic acid) should also be used at a separate time. The brand specifically warns against combining with other exfoliating acids and retinoids.
This product is best suited for combination, oily, and acne-prone skin types. It is excellent for those with rough texture, clogged pores, blackheads, dull skin, and hyperpigmentation. It is not recommended for sensitive or rosacea-prone skin due to its high 20% concentration. If you have sensitive skin, the brand recommends Revox B77 JUST Glycolic Acid 7% or JUST Lactic Acid + HA as gentler alternatives.
Most users notice smoother, brighter skin within the first 1–2 weeks. Visible improvement in skin tone, reduced blackheads, and fading dark spots typically appear within 3–4 weeks. Anti-aging benefits like reduced fine lines and improved firmness require at least 6–8 weeks of consistent use, as collagen production changes happen deeper in the skin. Full results with regular use are typically seen at the 3-month mark.
Use this product in your evening routine only. Apply to clean, completely dry skin after cleansing. Leave on for 10–15 minutes, then rinse thoroughly with water. After rinsing and drying, follow with a serum or nourishing oil (like argan oil), then moisturizer. Use 2–3 times per week — not daily. Always apply broad-spectrum SPF 30+ the next morning.
No. This product has a comedogenic rating of 0 out of 5. The formula is completely oil-free, silicone-free, and contains no known pore-clogging ingredients. In fact, glycolic acid actively helps unclog pores by dissolving the dead skin cells and sebum that cause congestion. It is one of the cleanest acid treatments available for acne-prone skin.
The product has a Period After Opening (PAO) of 12 months. At the recommended usage of 4–5 drops, 2–3 times per week, the 30ml bottle typically lasts 4–6 weeks. Store in a cool, dry place away from direct sunlight, and keep the bottle tightly closed after each use to maintain the formula's potency and stability.
Verdict: The Revox B77 JUST 20% Glycolic Acid Toning Solution is a powerhouse exfoliant that delivers professional-grade results at a remarkably affordable price. Its ultra-clean 8-ingredient formula is ideal for experienced acid users seeking potent, no-nonsense exfoliation for dull skin, clogged pores, and hyperpigmentation. The fungal acne-safe, non-comedogenic formula makes it a standout for acne-prone skin. However, the small 30ml bottle, lack of soothing ingredients, and high concentration make it less suitable for beginners or sensitive skin types. If you know your skin can handle 20% glycolic acid, this is exceptional value for money.
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 |
|---|---|---|---|
| 1 |
Water
Solvent, Skin Conditioning
|
|
|
| 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 |
Potassium Hydroxide
Buffering
|
|
|
| 1 |
Xanthan Gum
Binding Agent, Emulsion Stabilising, Skin Conditioning, Surfactant -Emulsifying Agent, Viscosity Increasing Agent, Binding, Gel Forming, Viscosity Controlling
|
|







