Face Serum Trio, contains one Retinol, Vitamin C & Hyaluronic Acid Serum in the pack. The bundle includes one Vitamin C Serum, one Retinol Serum, and one Hyaluronic Acid serum. Tita Glow’s face serums work well when used individually and even better when paired together. Vitamin C brightens and helps with dark spots, improving skin tone and appearance. Retinol reduces the appearance of fine lines and wrinkles and improves skin texture and tone. Hyaluronic Acid hydrates and plumps the skin, improving the overall look of the skin. Hyaluronic can be used with Vitamin C and Retinol. Do not use Vitamin C and Retinol. Retinol can be used with Hyaluronic Acid. See instructions for day or night use. Always moisturize after and wait for a few minutes for each product to get absorbed before layering.