Retinol and retinal are both forms of vitamin A used to improve skin texture, acne, and signs of ageing. Retinol needs two conversion steps in the skin to become active (retinoic acid), making it gentler but slower. Retinal (retinaldehyde) only needs one conversion, so it works faster and is more potent but can be more irritating. That’s why retinal often delivers quicker results, while retinol suits more sensitive or beginner skin types #skincare #retinal #retinol

Vitamin D