Which ingredient is known for its effectiveness in reducing redness and inflammation related to acne?

Niacinamide is recognized for its ability to effectively reduce redness and inflammation associated with acne. It is a form of vitamin B3 that possesses anti-inflammatory properties, making it suitable for calming irritated skin. Niacinamide can help to improve the skin barrier function, which is crucial for maintaining hydration and resilience against environmental stressors. By minimizing swelling and redness, niacinamide enhances the overall appearance of the skin and can aid in the healing process of acne lesions.

In contrast, while salicylic acid is excellent for treating acne due to its exfoliating properties and ability to penetrate pores, it primarily functions by clearing up blocked pores rather than directly addressing redness. Glycolic acid, an alpha hydroxy acid, is mainly used for exfoliation and improving skin texture but does not focus on inflammation reduction. Benzoyl peroxide is effective in targeting acne-causing bacteria and reducing oil production, but it can sometimes increase irritation or redness in sensitive skin types.