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Differin Adapalene Gel 0.1% Routine Guide: BPO Compatibility & Barrier Sandwiching
Third-generation RAR-beta/gamma retinoid gel. Photostable and oxidation-resistant, but requires barrier lipid buffering.
Recommended Spacing: 5 Minutes
Do not apply in the AM; UV photons and oxidizing actives degrade retinoid efficacy. Wear SPF 50+ daily.
In the PM, Chemically stable with Benzoyl Peroxide, but co-layering with AHAs/BHAs causes acute retinoid dermatitis and perioral peeling.
Adapalene’s rigid naphthoic acid ring resists Benzoyl Peroxide oxidation, but co-layering doubles transepidermal water loss (TEWL) and erythema.
Layering low-pH keratolytic acids (pH 3.0–3.8) with nuclear retinoids strips the stratum corneum barrier, accelerates acid-catalyzed retinoid degradation, and causes severe retinoid dermatitis.
Layering low-pH keratolytic acids (pH 3.0–3.8) with nuclear retinoids strips the stratum corneum barrier, accelerates acid-catalyzed retinoid degradation, and causes severe retinoid dermatitis.
+ View 1 additional secondary ingredient interaction(s)
Stacking multiple leave-on AHA/BHA exfoliants in one routine dissolves both hydrophilic surface corneodesmosomes and lipophilic sebaceous lipids, causing acute barrier burn.
- AM Prep: pH 5.5 Gentle Amino-Acid Cleanser or Water Rinse [pH 5.5 · Pat dry]
- AM Antibacterial (Split from PM Retinoid): Benzoyl Peroxide 2.5%–5.5% Treatment (Prevents PM Retinoid Oxidation) [pH 5.0 · ⏱ Let dry 5 min]
- AM Barrier + Photoprotection: Physiological Ceramide Moisturizer + Broad-Spectrum SPF 50+ PA++++ [pH 5.8 · Mandatory final step]
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Esthetician & Cosmetic Chemist FAQ
What is the formulation pH and full INCI profile of Differin Adapalene Gel 0.1% Acne Treatment?
Differin Adapalene Gel 0.1% Acne Treatment is formulated at pH 5.5 ($16). Full INCI: Adapalene 0.1%, Carbomer 940, Edetate Disodium, Methylparaben, Poloxamer 182, Propylene Glycol, Purified Water, Sodium Hydroxide.
Which skincare actives conflict with Differin Adapalene Gel 0.1% Acne Treatment?
Chemically stable with Benzoyl Peroxide, but co-layering with AHAs/BHAs causes acute retinoid dermatitis and perioral peeling.
Is Differin Adapalene Gel 0.1% Acne Treatment comedogenic or fungal-acne (Malassezia) safe?
Run the pre-loaded INCI analyzer above to inspect positional comedogenicity (0–5) and C12–C24 Malassezia lipid ester triggers for every ingredient in Adapalene Gel 0.1% Acne Treatment.