Radiance Glow Illuminating Serum
Radiance Glow Illuminating Serum
Product Description
Product overview
A lightweight brightening serum powered by C-three Complex (3 forms of Vitamin C), Niacinamide, and Japanese Sakura Extract. Developed with Mizu Glow Technology in collaboration with former Shiseido R&D Director Tadahiro Shimada, this fast-absorbing formula targets dullness, dark spots, and uneven skin tone — specially designed for oily, combination, and sensitive skin in tropical climates.
C-three Complex Brightening
Three stabilized Vitamin C derivatives (3-O-Ethyl Ascorbic Acid, Ascorbyl Tetraisopalmitate, Magnesium Ascorbyl Phosphate) work synergistically to brighten skin and reduce dark spots — claimed to be 7x more effective than 10% Vitamin C alone.
Texture & feel
SENSORYC-three Complex Brightening
Three stabilized Vitamin C derivatives (3-O-Ethyl Ascorbic Acid, Ascorbyl Tetraisopalmitate, Magnesium Ascorbyl Phosphate) work synergistically to brighten skin and reduce dark spots — claimed to be 7x more effective than 10% Vitamin C alone.
Japanese Sakura Extract
Prunus Yedoensis Leaf Extract helps inhibit melanin production, promotes skin barrier repair, and reveals a naturally radiant complexion. Developed with former Shiseido R&D Director Tadahiro Shimada.
Niacinamide (Vitamin B3)
Helps minimize the appearance of pores, manage hyperpigmentation, and strengthen the skin barrier for a smoother, more luminous complexion.
Mizu Glow Technology
A proprietary mild, high-efficiency brightening system designed specifically for sensitive Southeast Asian skin. Delivers effective brightening without the irritation commonly associated with potent actives.
Safety & compatibility
SAFENo retinoids, salicylic acid, hydroquinone, or chemical sunscreens. Vitamin C derivatives and niacinamide are considered safe during pregnancy and breastfeeding. Always consult your doctor.
Contains Isohexadecane, Steareth-2, Steareth-21, PEG-40 Stearate, and Ascorbyl Tetraisopalmitate (fatty acid ester) which may feed Malassezia yeast. Avoid if prone to fungal acne.
Predominantly water-based, lightweight formula with no heavy oils or known pore-clogging ingredients in significant concentrations. Suitable for acne-prone skin (non-fungal).
No parabens, sulfates, harsh alcohols, or common allergens. Uses gentle preservative system (Phenoxyethanol, Caprylhydroxamic Acid).
Listed as "Fragrance" in INCI. While reported to have a mild floral scent, those with very reactive or fragrance-sensitive skin should patch test first.
Specifically formulated for sensitive skin with Bisabolol (chamomile-derived) and Dipotassium Glycyrrhizate (licorice root) to calm and soothe. Contains gentle Vitamin C derivatives rather than pure ascorbic acid.
Ingredient breakdown
INGREDIENTSC-three Complex (3X Vitamin C)Proven
A proprietary blend of three stabilized Vitamin C derivatives that target dullness and dark spots from multiple pathways. Unlike pure ascorbic acid, these derivatives are gentler and more stable, making them ideal for sensitive skin in humid climates.
- 3-O-Ethyl Ascorbic Acid: A highly stable, water-soluble Vitamin C derivative that brightens and energizes the skin. Penetrates effectively and converts to active Vitamin C within the skin.
- Ascorbyl Tetraisopalmitate: An oil-soluble Vitamin C derivative that targets dark spots and boosts radiance. Works deeper in the lipid layers of the skin.
- Magnesium Ascorbyl Phosphate (MAP): A proven in-vivo skin brightener that also supports collagen synthesis. One of the most well-researched Vitamin C derivatives.
Niacinamide (Vitamin B3)Proven
A multitasking powerhouse that addresses hyperpigmentation, minimizes pore appearance, and strengthens the skin barrier. The brand uses 99% pure Niacinamide for maximum efficacy.
- Brightening: Inhibits melanosome transfer from melanocytes to keratinocytes, helping to reduce the appearance of dark spots and uneven skin tone.
- Pore Minimizing: Helps regulate sebum production and reduces the stretched appearance of enlarged pores.
- Barrier Support: Boosts ceramide and fatty acid production in the skin barrier, improving resilience against environmental stressors.
Sakura Extract (Prunus Yedoensis Leaf Extract)Promising
Japanese cherry blossom leaf extract traditionally valued for its brightening and soothing properties. Selected by cosmetic researcher Tadahiro Shimada for its ability to help reduce melanin production.
- Melanin Inhibition: Contains natural compounds that help suppress melanin production for a lighter, more even complexion.
- Skin Barrier Repair: Promotes skin renewal and barrier repair, which is essential for a healthy glow.
- Antioxidant Protection: Rich in flavonoids that help protect the skin from oxidative stress caused by UV exposure and pollution.
Sodium HyaluronateProven
A low-molecular-weight form of Hyaluronic Acid that penetrates deeper into the skin to deliver intense hydration and plumping effects. Helps skin appear dewy and supple.
- Deep Hydration: Smaller molecular size allows deeper penetration compared to regular Hyaluronic Acid, hydrating from within.
- Plumping Effect: Can hold up to 1,000x its weight in water, helping to plump fine lines and create a smooth, glowing surface.
Bisabolol Soothing AgentProven
A chamomile-derived active that calms redness and irritation. Provides anti-inflammatory protection that makes potent actives like Vitamin C more tolerable for sensitive skin.
- Anti-Inflammatory: Clinically shown to reduce redness and irritation caused by environmental aggressors and active ingredients.
- Skin Healing: Supports the skin's natural repair process, accelerating recovery from minor irritation.
Melon Fruit Extract & Soybean Seed ExtractPromising
Botanical extracts rich in antioxidants and vitamins that provide additional brightening and protective benefits alongside the core actives.
- Cucumis Melo (Melon) Extract: Rich in superoxide dismutase (SOD), a powerful antioxidant enzyme that protects against oxidative damage.
- Glycine Soja (Soybean) Extract: Contains isoflavones that help even skin tone and improve skin elasticity.
Dipotassium Glycyrrhizate (Licorice Root)Proven
A potent anti-inflammatory and brightening ingredient derived from licorice root. Works synergistically with Vitamin C to calm skin while fading discoloration.
- Anti-Inflammatory: One of the most effective botanical anti-inflammatory agents, ideal for calming sensitized skin.
- Brightening Support: Glabridin component helps inhibit tyrosinase activity, supporting the overall brightening effect of the formula.
41 ingredients
Water, Propanediol, PPG-24-Glycereth-24, Butylene Glycol, Methyl Gluceth-20, Hydroxyethyl Urea, Niacinamide, Bis-Ethoxydiglycol Cyclohexane 1,4-Dicarboxylate, Propylene Glycol, Betaine, Cucumis Melo (Melon) Fruit Extract, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Hydroxyacetophenone, Aminomethyl Propanol, Glycine Soja (Soybean) Seed Extract, Corallina Officinalis Extract, Dipotassium Glycyrrhizate, Dihydroxypropyl Arginine Hcl, Polymethylsilsesquioxane, Dimethicone, Isohexadecane, PEG-40 Hydrogenated Castor Oil, Pentylene Glycol, Disodium EDTA, 4-T-Butylcyclohexanol, Caprylhydroxamic Acid, Sodium Hyaluronate, Fragrance, PEG-40 Stearate, Cetearyl Methicone, Steareth-2, Steareth-21, Phenoxyethanol, Caprylyl Glycol, Sodium Benzoate, 10-Hydroxydecanoic Acid, Magnesium Ascorbyl Phosphate, 3-O-Ethyl Ascorbic Acid, Prunus Yedoensis Leaf Extract, Ascorbyl Tetraisopalmitate
Where it fits in your routine
ROUTINEUse morning and evening on clean skin. For best results, pair with the full Radiance Glow series (Purifying Facial Foam, Toner Essence, Day Cream, Night Gel). Always apply sunscreen in the morning when using Vitamin C products.
How to use
HOW TO USECleanse
Wash your face with a gentle cleanser and pat dry. For optimal absorption, apply to slightly damp skin.
Apply Serum
Dispense 2–3 drops onto your fingertips and gently press onto face and neck, avoiding the eye area. Pat gently to help absorption.
Follow Up
Layer with your moisturizer to lock in hydration. In the morning, always follow with a broad-spectrum sunscreen (SPF 30+).
Be Consistent
Use daily, morning and evening, for at least 4–8 weeks to see visible brightening and dark spot reduction results.
Who is it for?
WHOPerfect for you if:
- You have dull, uneven skin tone and want a natural glow
- You want to fade dark spots, acne scars, or hyperpigmentation
- You have oily, combination, or sensitive skin
- You live in a tropical or humid climate
- You want a gentle Vitamin C serum that won't sting or irritate
- You're looking for an affordable brightening serum with proven actives
- You want a lightweight, non-sticky formula for daily use
Consider alternatives if:
- You have fungal acne (malassezia folliculitis) — contains non-FA-safe ingredients
- You need maximum-strength Vitamin C (this uses derivatives, not L-Ascorbic Acid)
- You have very dry skin and need a richer, more emollient serum
- You are extremely fragrance-sensitive (contains fragrance)
- You need anti-aging as the primary focus (better suited for brightening)
- You prefer completely fragrance-free formulations
Skin type compatibility
SKIN TYPESSpecifically formulated for oily skin. Lightweight liquid texture absorbs instantly without adding shine or greasiness. Niacinamide helps regulate sebum production.
Balances well across different face zones. Hydrating enough for dry areas yet lightweight enough for the T-zone. Ideal for tropical combination skin.
Formulated with sensitive skin in mind — Bisabolol and Licorice Root calm irritation. Uses gentle Vitamin C derivatives instead of pure ascorbic acid. Contains fragrance, so patch test recommended.
Provides brightening benefits with some hydration from Hyaluronic Acid and Betaine, but lightweight formula may not provide enough moisture. Layer with a rich moisturizer on top.
Low comedogenic rating (1/5) and non-greasy formula is suitable for most acne-prone skin. However, NOT fungal acne safe. Niacinamide helps fade post-acne dark marks effectively.
Results timeline
WEEKS 8–12Immediate Hydration & Glow
Skin feels softer and more hydrated. A subtle natural glow appears after application thanks to light-reflecting properties and instant hydration from Hyaluronic Acid and Betaine.
85% noticed a dewy glowImproved Skin Texture
Skin starts to feel smoother and more refined. Users report a plumper, more even-looking complexion. Niacinamide begins to reduce the appearance of enlarged pores.
70% noticed smoother textureVisible Brightening
Dark spots and acne marks begin to fade noticeably. Overall skin tone appears more luminous and even. The C-three Complex delivers progressive brightening results.
75% noticed brighter skin toneSignificant Dark Spot Reduction
Consistent use yields visible reduction in hyperpigmentation and post-inflammatory marks. Skin looks healthier, clearer, and more radiant overall.
65% noticed dark spot fadingRatings by platform
15K+ REVIEWSPros & cons
BALANCEDPraised
- Extremely affordable for the active ingredients included
- Lightweight, non-sticky texture absorbs rapidly into skin
- Visible brightening and glow after consistent use
- Gentle formula — doesn't sting or cause redness for most users
- Works well for oily and combination skin in hot, humid climates
- Makes skin feel plump, soft, and hydrated
- Suitable for both morning and evening use
- Co-developed with former Shiseido R&D Director
Criticized
- Small bottle size (20ml) doesn't last long with twice-daily use
- Contains fragrance — not ideal for extremely sensitive skin
- Dropper packaging is not very travel-friendly
- Brightening results are gradual (4–8 weeks needed)
- Not fungal acne safe due to several ingredients
- May not be moisturizing enough for very dry skin types
- Limited international availability — mostly sold in Southeast Asia
Budget-friendly alternatives (dupes)
DUPESAlso uses 3-O-Ethyl Ascorbic Acid and Niacinamide for brightening. Larger 30ml size. Contains salicylic acid (not pregnancy-safe) and alcohol. More widely available globally.
Uses a different Vitamin C derivative (Ascorbyl Glucoside) at a higher concentration. Fragrance-free and simpler formula. Lacks the multi-Vitamin C approach and botanical extracts.
Japanese brightening serum using pure Ascorbic Acid + derivatives. More oil-like texture. Stronger spot treatment focus, great for targeted use. Contains Vitamin E for added stability. Fragrance present.
Comparison with competitors
SIDE-BY-SIDEStorage & shelf life
12 MONTHS12 months after opening
Store in a cool, dry place away from direct sunlight. Avoid high temperatures to preserve Vitamin C stability.
Glass dropper bottle with pipette. Opaque/tinted packaging helps protect Vitamin C derivatives from light degradation.
Yes, under 100ml — TSA/airport security compliant. Glass dropper may need extra care in luggage. Some users note the dropper is slightly bulky.
Frequently asked questions
FAQYes. This serum does not contain retinoids, salicylic acid, hydroquinone, or chemical sunscreens — the most commonly flagged ingredients during pregnancy. It uses stabilized Vitamin C derivatives and Niacinamide, both of which are generally considered safe for use during pregnancy and breastfeeding. However, always consult your OB-GYN or dermatologist before introducing new skincare products during pregnancy.
No, this serum is not fungal acne safe. It contains several ingredients that may feed Malassezia yeast, including Isohexadecane, Steareth-2, Steareth-21, PEG-40 Stearate, and Ascorbyl Tetraisopalmitate (a fatty acid ester form of Vitamin C). If you struggle with fungal acne or pityrosporum folliculitis, consider a fungal-acne-safe alternative like The Ordinary Ascorbyl Glucoside Solution 12%.
This serum uses stabilized Vitamin C derivatives (not pure L-Ascorbic Acid), so it's generally more compatible with other actives. You can use it alongside retinol — apply the serum in the morning and retinol at night for best results. It pairs well with other Vitamin C products for a boost. For AHA/BHA, use them on alternating nights or apply the serum at least 15–20 minutes after acid exfoliation to avoid potential irritation. Start slowly when combining actives.
This serum was specifically developed for oily, combination, and sensitive skin — particularly suited for Southeast Asian skin types and tropical climates. Its lightweight, fast-absorbing texture works exceptionally well for oily skin without adding shine. It also works well for normal skin. Those with very dry skin may find they need a richer moisturizer on top, as the serum alone may not provide enough hydration.
Most users report feeling a subtle glow and improved hydration within the first week. Noticeable brightening and smoother texture typically appear around weeks 2–4. For significant dark spot reduction and overall skin tone improvement, allow 6–12 weeks of consistent morning and evening use. Results are gradual but cumulative — the gentle Vitamin C derivatives work progressively without causing irritation.
Apply after cleansing and toning, before your moisturizer. In a full routine: Cleanser → Toner → This Serum → Moisturizer → Sunscreen (AM). For best results, the brand recommends pairing it with the Radiance Glow Toner Essence before and the Radiance Glow Day Cream (AM) or Night Gel (PM) after. Apply on slightly damp skin for better absorption.
This serum has a low comedogenic rating of 1 out of 5. It's a predominantly water-based, lightweight liquid formula without heavy oils or known pore-clogging ingredients in significant concentrations. Niacinamide actually helps minimize pore appearance and regulate oil production. However, everyone's skin reacts differently, so if you're very acne-prone, patch test on a small area first. Note: it is NOT fungal acne safe.
The serum has a 12-month Period After Opening (PAO). At 20ml with twice-daily use (2–3 drops per application), the bottle typically lasts about 4–6 weeks. Store in a cool, dry place away from direct sunlight to preserve the Vitamin C derivatives' potency. If the serum changes color significantly (darkens to deep yellow or brown), it may have oxidized and should be replaced.
Verdict: The Y.O.U Radiance Glow Illuminating Serum is an impressive and affordable brightening serum that punches well above its price point. Its C-three Complex (3 forms of Vitamin C) combined with Niacinamide, Sakura Extract, and soothing Bisabolol makes it a gentle yet effective option for those battling dullness and dark spots — especially if you have oily, combination, or sensitive skin in a tropical climate. The collaboration with former Shiseido R&D Director Tadahiro Shimada lends credibility to the Mizu Glow Technology. While the 20ml bottle size is on the small side and it's not suitable for fungal acne, the lightweight, non-sticky texture, pregnancy safety, and genuine brightening results make it an excellent value in the Southeast Asian brightening serum category.
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
|
|
|
| 1 |
Propanediol
Solvent, Viscosity Controlling, Viscosity Decreasing Agent
|
|
|
| 0 |
PPG-24-Glycereth-24
Emulsifying, Solvent
|
|
|
| 1 |
Butylene Glycol
Solvent, Skin Conditioning, Masking, Fragrance, Humectant, Viscosity Controlling, Viscositydecreasing Agent
|
Hydrating
|
|
| 1 |
Methyl Gluceth-20
Humectant, Moisturising
|
|





