Alfaparf Semi Di Lino Density Thickening Lotion 6x13ml is a professional, leave-in treatment in single-use vials for fine, aging hair, designed to plump, revitalize, and thicken hair fibers, adding body and volume with thermal protection (up to 230°C) without weighing it down, using amino acids and peptides to replenish lost thickness for a fuller, healthier look.