Deep & Renew Treatment Mask

Intensive reconstruction. Deep renewal. Visible transformation.

The Deep & Renew Treatment Mask by Stephen Knoll New York is a high-performance treatment designed to repair deeply damaged hair and restore its structural integrity from within. Developed with advanced Japanese technology, this concentrated formula targets the core of the hair fiber, rebuilding strength while restoring softness and elasticity.

By combining reparative actives, amino acids, and advanced conditioning agents, it works across multiple layers of the fiber—repairing internal damage while sealing the cuticle for a smoother, more resilient surface.

Hair feels stronger, denser, and visibly healthier, with improved texture, shine, and long-lasting manageability.

Why you’ll love it

• Deep reconstruction of severely damaged hair
• Restores strength, density, and resilience
• Improves elasticity and reduces breakage
• Smooths and seals the cuticle
• Delivers visible transformation over time

Sensorial experience

A dense, luxurious cream texture adheres to the hair, delivering immediate softness while a refined floral-green fragrance elevates the treatment ritual.

Best for

For severely damaged, chemically treated, porous, or weakened hair in need of intensive repair and structural renewal.

How to use

After shampooing, remove excess water and apply evenly through lengths and ends. Leave on for 5–10 minutes, then rinse thoroughly. Use 1–2 times per week or as part of an intensive repair cycle.

Salon Technique: Smart Mix Method

Enhance your treatment by customizing the intensity of repair.

Mix 1–3 pumps of Deep & Renew Booster Oil into the Treatment Mask before application to amplify penetration, improve sealing, and deliver more targeted results.

1 pump → light repair

2 pumps → balanced reconstruction

3 pumps → intensive recovery

This technique allows you to adapt your routine to your hair’s current condition—maximizing performance without overloading.