Niacinamide in cosmetics is a powerful ingredient for both moisturizing and brightening the skin. However, when used in high concentrations in skin care formulas, niacinamide can cause skin irritation.

Retinol is the 'golden' active ingredient in anti-aging, brightening, and acne treatment. However, not everyone knows how to apply retinol correctly to fully benefit from its amazing effects. So, should users apply retinol before or after moisturizer?

Many people wonder, "Why does retinol cause dark skin?" or "What to do if your skin gets dark when using retinol?" Understanding the uses and how to use it will help make the process more effective.