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Can I use adapalene with niacinamide?

All ingredients & pairings
adapaleneniacinamide
Cited benefitmoderate evidence

Yes — a cited synergy.

A double-blind, split-face RCT put a ceramide-and-niacinamide moisturizer on one side of the face and a plain hydrophilic cream on the other, with BOTH sides using the same adapalene 0.1% + benzoyl peroxide 5% regimen — the niacinamide/ceramide side cleared significantly more acne lesions by week 8. That's an efficacy synergy, not the assumed tolerability one: the same trial found no significant difference in irritation measures (transepidermal water loss, hemoglobin index, hydration, skin pH) between the two moisturizers, so the popular claim that niacinamide specifically eases adapalene irritation isn't actually what this study shows.

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1 source
  1. Tempark T, Shem A, Lueangarun S. Efficacy of ceramides and niacinamide-containing moisturizer versus hydrophilic cream in combination with topical anti-acne treatment in mild to moderate acne vulgaris: split-face, double-blinded RCT. J Cosmet Dermatol 2024

This describes a general ingredient interaction backed by the cited research below, not a diagnosis or a personalized skincare plan. Individual skin varies — introduce new actives gradually and talk to a dermatologist about your own routine.