Calming Booster is the perfect booster serum for skin experiencing redness, heat or sensitivity. It combines 7 botanical complexes and varying weights of hydrolyzed collagen and hyaluronic acid to strengthen the skin barrier and reduce inflammation/redness. For very sensitive skin, use right after cleansing and follow-up with toner to reduce post-cleansing irritation. What to know: 1. MultiEx BSASM is a blend of glycyrhiza glabra, salvia rosmarinus, camellia sinesis, matricaria recutita, centella asiatica, polygonum cuspidatum, and scutellaria baicalensis - these 7 plant extracts were selected from hundreds for their exceptional ability to soothe and cool the skin 2. Multiple weights of hydrolyzed collagen and hyaluronic acid create a gradient moisturizing effect that deeply hydrates the skin. 3. A blend of powerful peptides helps prevent signs of aging, calm the skin and prevent pigmentation.