Innovative tri-peptide serum formulated to stimulate collagen production, reducing the appearance of wrinkles & fighting the signs of aging on the skin. Clinically proven to improve skin elasticity by 29% in just 2 weeks*. Formulated with a high percentage of niacinamide to even the appearance of skin tone & hydrate skin. Upcycled blood orange water protects from our ever-changing environmental conditions. At UpCircle we offer a selection of our best-selling products by Litre, usually in a Kilner Jar. This is the first refill we've offered in an aluminium bottle with a pump! When you finish the refill, send it back to us & we'll reuse it - all part of our closed-loop refill scheme. 30ml of Peptide Serum weighs 30g - you get approximately 17 x 30ml bottles in the 500ml refill. *Based on clinical studies of 22 panellists over 2 weeks.