The Set Subrina Professional Care Keratin Strengthening Hair Serum includes 6 vials of 10 ml each, designed to offer an intensive regenerating treatment. Enriched with keratin, this serum penetrates deep into the hair fiber, strengthening and protecting damaged and brittle hair. The professional formula helps prevent breakage, improving elasticity and giving a new shine to the hair. Easy to apply, the product absorbs quickly without weighing it down, leaving hair soft, silky and vital. Ideal for those who want a visible and long-lasting result, the set represents an effective solution to strengthen and nourish hair daily with the quality guaranteed by Subrina Professional.