How to Do a Protein Treatment for Hair at Home

Apply a protein-rich mask to clean, damp hair for 10-20 minutes, then rinse and follow with deep conditioning.

Protein treatments are like spanx for your hair—necessary sometimes, but don't live in them or things get uncomfortable.

1. Start with clarified hair. Wash with a clarifying shampoo to remove buildup. Your hair needs to be clean for the protein to penetrate properly. Skip conditioner at this stage.
2. Apply protein treatment to damp hair. Work the treatment through mid-lengths to ends, avoiding your scalp. Focus on areas that feel mushy, stretchy, or overly soft when wet.
3. Time it right. Leave on for 10-20 minutes maximum. Protein treatments can make hair brittle if left too long, so set a timer and don't exceed it.
4. Rinse thoroughly and condition. Remove all product with cool water, then apply a moisturizing deep conditioner. This balances the protein with moisture for optimal hair health.