Vitamin C Booster — Full Size 30ml A lightweight serum with 15% pure ascorbic acid, in airtight, light-protective packaging. Store refrigerated as indicated on the product. Manufacturer: Beyer & Söhne $79.00 Custom wishlist OK Add to wishlist Qty: Add to cart Email a friend A lightweight serum with 15% pure ascorbic acid, in airtight, light-protective packaging. Store refrigerated as indicated on the product.How to useApply to cleansed skin as directed, then follow with moisturiser and daytime sun protection. Keep refrigerated as indicated on the product.