A hair mask is a deep conditioning treatment designed to nourish and repair hair more intensively than a regular conditioner. It is packed with concentrated ingredients like oils, proteins, and vitamins that penetrate the hair shaft for an extended period to address specific issues such as dryness, damage, or frizz. 
How hair masks differ from conditioner
Concentration: Hair masks have a higher concentration of active ingredients compared to daily conditioners.
Duration: They are formulated to be left on the hair for a longer period (e.g., 5-20 minutes or more) to allow for deeper penetration of nutrients, whereas conditioners are rinsed out almost immediately.
Purpose: Conditioners maintain hair health, while masks restore and repair it by targeting concerns like dryness, frizz, and damage. 
Benefits of using a hair mask
Deep hydration: Replenishes moisture to combat dryness.
Repair: Helps to repair damage from heat styling, coloring, and environmental factors.
Strength: Strengthens hair to prevent split ends.
Smoothness and shine: Improves texture, adds softness, and increases shine.
Protection: Creates a protective barrier that helps lock in moisture and protect against future damage.
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