How should I introduce this serum into my routine if I have sensitive skin or use other retinoids?

If your skin is sensitive or you already use other retinoid products (like retinol creams or prescription treatments), it's wise to start slowly. Begin by applying the serum once every two or three days, in the evening, to observe how your skin reacts. This allows your skin to adapt to the vitamin A content without overwhelming it.

You should also check the ingredient lists of your other skincare items to avoid inadvertently layering multiple vitamin A sources, which can increase the risk of irritation, dryness, or peeling. Apply the serum to clean, dry skin, and wait a minute for it to absorb before following with a moisturizer to help counteract potential dryness. If you experience persistent redness, stinging, or flaking, stop using the product. As with any new cosmetic, individuals who are pregnant, breastfeeding, on medication, or have chronic skin conditions should consult a specialist before use.