TULA
Secret Solution
Secret Solution
TULA
secret-solution
Tone
9818386104613
Morning or Evening?
How often will you use this product?
Notes
Highlights
WHAT IS IT?
pH balancing & resurfacing treatment gel toner
FEATURES
Exfoliates, soothes and balances skin overnight, Powered by Pro-Glycolicยฎ Complex, Kickstarts skin surface's renewal process
BEST FOR
All skin types
CHECKS
Alcohol-free
Who Is It For?
All Ages All GendersWhat Does It Help With?
Skin Resurfacing Brightening Smoothing Evening Skin ToneBudget
Mid-range ($30-$75)How To Use
Which routine should it be used in?
Instructions:
Key Information
What TULA Says
Product Description:
Your secret solution to resurfaced, brighter-looking skin. This pH balancing & resurfacing treatment gel features a blend of probiotic extracts & glycolic acid to powerfully, yet gently exfoliate skin.
About the Brand:
Ingredients Overview
Ingredients List
Aqua/Water/Eau, Glycolic Acid, Butylene Glycol, Lactococcus Ferment Lysate, Sodium Hydroxide, Lactic Acid, Sodium Hyaluronate, Agar, Glycerin, Tremella Fuciformis Sporocarp Extract, Camellia Sinensis Leaf Extract, Vaccinium Angustifolium (Blueberry) Fruit Extract, Curcuma Longa (Turmeric) Root Extract, Cichorium Intybus (Chicory) Root Extract, Yogurt Extract, Carrageenan, Betaine, Glucose, Linum Usitatissimum (Linseed) Seed Oil, Xanthan Gum, Potassium Sorbate, Disodium EDTA, Sodium Chloride, Sodium Benzoate, Polysorbate 20, Tetrasodium EDTA, Ethylhexylglycerin, Phenoxyethanol
Key Ingredients
glycolic acid, probiotic extracts, prebiotics
Ingredients Details
Glycolic Acid
Common Name(s): Hydroxyacetic acid,2-hydroxyacetic acid
CAS Number: 79-14-1
DESCRIPTION
What It Does: Provides maximum aha efficacy from the smallest most penetrating alpha-hydroxy acid.
Why It's Used: The most potent aha โ glycolic acid's smallest molecular size provides the deepest penetration and highest efficacy of any alpha-hydroxy acid for exfoliation and anti-aging.
How It Works: Smallest aha (mw 76) provides deepest stratum corneum penetration. disrupts corneodesmosomes reducing cohesion. stimulates fibroblast collagen i and iii synthesis. efficacy is ph-dependent โ free acid fraction determines activity.
Typically Found In: Chemical peels,body lotions,anti-aging serums,exfoliating toners
TECHNICAL DETAILS
Primary Category: Active ingredient โ primary aha
Secondary Functions: Brightening,collagen stimulation
Application Areas:
Facial Skincare
Body Care
Hair Care
Beard Care
Color Cosmetics (Makeup)
Dietary/Oral Supplements
Typical Concentration Range: 1%โ10% cosmetic; higher professional
SOURCING & ETHICS
Vegan Status: Yes โ synthetic or fermentation-derived
Halal Status: Yes
Source Notes: Fermentation-derived or synthetic. ph must be โค4.0 for aha activity.
SKIN COMPATIBILITY
Irritancy Rating: 2/5 โ low to moderate
Comedogenicity Rating: 0/5 โ non-comedogenic
Sensitivity Concerns: Photosensitizing โ mandatory spf use. start at low frequency.
Safe for Sensitive Skin: Use with caution โ spf required
SAFETY & COMPATIBILITY
Safety Profile: Eu cosmetics: max 10% leave-on, ph โฅ3.5, mandatory sun protection advisory. professional peel concentrations regulated separately.
Works Well With: Niacinamide,ceramides,hyaluronic acid,spf
Avoid Combining With: Retinol in same step; multiple exfoliants simultaneously
SCIENTIFIC NOTE
Glycolic acid's ph-dependent efficacy is critical: at ph 3.0 ~100% is in the free acid (membrane-permeable) form; at ph 3.5 ~70%; at ph 4.0 ~50%. the eu ph โฅ3.5 requirement reduces free acid proportion, lowering efficacy but also reducing irritation โ why professional peel concentrations at lower ph are far more active than equivalent cosmetic concentrations.
Last Verified: Cosing database,eu aha guidelines,cir safety assessment
Primary Sources: 2026-03-12