Efficacy of ceramides and niacinamide‐containing moisturizer versus hydrophilic cream in combination with topical anti‐acne treatment in mild to moderate acne vulgaris: A split face, double‐blinded, randomized controlled trial

Abstract Introduction Topical therapy is the mainstay treatment of acne, and topical retinoids such as tretinoin, tazarotene, and adapalene are recommended as the first‐line therapy for mild to moderate acne. However, the cutaneous irritations may occur, and the dermocosmetics are recommended to prevent side effects of anti‐acne drugs and adhere to treatment. Thus, this study aims to compare the efficacy and tolerability of ceramides and niacinamide‐containing moisturizer (CCM) versus hydrophilic cream in combination with topical anti‐acne treatment in mild to moderate acne vulgaris. Methods This was an 8‐week, randomized, double‐blinded, split face study in 40 patients assigned for topical anti‐acne medications (5% benzoyl peroxide and 0.1% adapalene gel), then randomly applied CCM or hydrophilic cream. All patients were followed at week 0, 2, 4, and 8 for acne improvement, adverse reactions, biometric, and biophysical evaluation. Results CCM could significantly improve the non‐inflammatory, inflammatory, and total acne lesions compared with hydrophilic cream after week 8 of treatment. Interestingly, there was an improvement of global worst score, hemoglobin index, melanin index, TEWL, skin hydration, sebum production, and skin surface pH, with no statistically significant differences between the two treatments. No serious side effects from clinical application of CCM and hydrophilic cream in mild to moderate acne vulgaris patients. Conclusion Ceramide and niacinamide‐containing moisturizer in combination with anti‐acne medication can significantly improve acne lesions and decrease cutaneous irritations toward a satisfactory treatment outcome of mild to moderate acne vulgaris.