Neogen V. Biome Infusion Serum - a vitamin serum formulated with 5% Neogen V. Biome Liposome, Niacinamide, Adenosine and 11 essential vitamins. Apply to clean face day and night. It absorbs quickly and is transparent. It does make my skin feel a little tacky but it doesn't pill. I love how my skin looks. I would definitely recommend this products.