Who is this for? Retinol Forte may be introduced to your routine after using a full bottle of Tri-Retinoid Complex Retinol Serum, to ensure the skin is used to daily application of moderate to high concentrations of vitamin A. How to use? Introduce Retinol Forte slowly into your regime by either applying to your skin followed by your recommended Environ vitamin A moisturiser, or mix it in with your recommended Environ vitamin A moisturiser, every evening. Retinol Serum Forte has been formulated with high concentrations of vitamin A. They are designed to help normalise the appearance of skin abnormalities and damage, and in promoting healthy-looking skin eventually creating skin that looks truly reborn beautiful. Avoid during pregnancy