La Biosthetique Long Hair Protective Repair Mask

Maintaining the health of long hair is a marathon, not a sprint, as the ends have often endured years of styling, sun exposure, and mechanical stress. When the hair’s natural protective layer wears thin, the structure becomes porous, leading to chronic dryness and snapping. The La Biosthetique Long Hair Protective Repair Mask serves as an intensive clinical intervention, saturating the hair with a high concentration of nutrients to reconstruct these damaged zones from the inside out.

Beyond simple surface smoothing, this treatment works to close the open cuticle and lock in essential moisture that long hair typically loses. It acts as a preventative shield, fortifying the hair against future environmental pollutants and the daily friction that causes split ends. After just one application, the hair regains its natural elasticity and resilience, transforming brittle lengths into a fluid, high-gloss mane that is easier to style and maintain.

• Deeply repairs the internal hair structure
  
  

• Seals the cuticle for lasting smoothness
  
  

• Boosts resistance to breakage and splits
  
  

• Infuses intensive, long-lasting moisture
  
  

• Shields against environmental pollutants
  
  

• Restores natural elasticity and shine
  
  

Best for:
dry, stressed, or damaged long hair that requires deep structural repair and protection

Key Active Ingredients:
Wheat peptides – deliver targeted repair to the hair shaft to increase internal strength

Glucose polyphenol – restores the natural protective film to improve elasticity and shine

Rapeseed oil glycerides – smooth the hair surface to provide exceptional softness and combability

How to use:
Distribute evenly through the mid-lengths and ends of clean, damp hair. For a standard boost, leave in for 5 to 10 minutes. For a more intensive treatment, leave for up to 20 minutes before rinsing thoroughly.