The Ordinary Multi-Peptide Serum for Hair Density is a 60ml serum designed to improve hair density. Formulated with ingredients like Glycerin and Caffeine, this serum is suitable for all hair types. It contains minerals and offers toning and nourishing benefits to the hair. As part of The Ordinary product line, this serum is a UK seller. Ideal for adults looking to enhance their hair density, this serum is a reliable option for those seeking to improve the overall health and appearance of their hair.