- Sustainability: This brand is certified Cruelty Free through the Leaping Bunny program, therefore has committed never to conduct, commission, pay for, or allow tests on animals at any phase of development, for both ingredients and final products. We place sustainability at the heart of what we buy and sell which is why we’ll reward you with double loyalty points when you shop sustainably.
Description:Nº.0 Intensive Bond Building Hair Treatment, the booster to No.3 (sold separately) to prime hair for even deeper repair.
Key Benefits:
- The highly concentrated formula rebuilds disulfide bonds to repair more severe damage and immediately strengthens hair when N°0 is used with N°3
- Strengthens hair and repairs damage on a molecular level by rebuilding the disulfide bonds that give hair its structure
- 68% better detangling, improved conditioning, and smoother*
- 68% more repair*
How To Use:On dry hair, apply and distribute evenly from root to tip. Leave on for 10 minutes. Do not rinse. Apply N°3 Hair Perfector™ and comb through. Leave on for 10 minutes. Rinse well. Use as a two-part system with N°3 once a week or 2-3x per week for very damaged hair.
*Proven via: Clinically proven when used as a three-part system of N°0, N°3 and N°4 (sold separately), in just one use.























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