This set features the Lazartigue Stronger Fortifying Serum, designed to deeply nourish and strengthen hair from the root to the tip. It works to improve hair density and resistance against breakage. Complementing the serum is the Lazartigue Fortify Shampoo, formulated to gently cleanse while supporting the hair's natural vitality. Regular use of this duo promotes healthier, more resilient hair. Ideal for those seeking intensive revitalization and structural improvement for thinning or weakened hair.