Living Proof 
Perfect Hair Day Weightless Hydrating Mask

What it is: A silicone-free mask that revives dull and lifeless fine to medium hair, providing up to 72 hours of locked-in hydration for healthier, shinier hair.*

Hair Type: Straight, Wavy, and Curly

Hair Texture: Fine and Medium

Hair Concerns:

- Dryness

- Shine

- Damage, Split Ends, and Breakage

Key Benefits:

- Reduce breakage by up to 90%**

- 72-hour hydration lock*

- Supports healthier hair over time​

Highlighted Ingredients:

- Hemisqualane: Smooths the cuticle, leaving hair silky and shiny.

- Murumuru Butter: Softens hair and enhances shine.

- Amino Acid Blend: Increases hair's hydrophobicity to lock in moisture.

Ingredient Callouts: Free of parabens, formaldehydes, formaldehyde-releasing agents, phthalates, mineral oil, retinyl palmitate, oxybenzone, coal tar, hydroquinone, sulfates SLS & SLES, triclocarban, triclosan, and contains less than one percent synthetic fragrance. It is also vegan, cruelty-free, and comes in recyclable packaging.

What Else You Need to Know: This lightweight mask is designed to rehydrate fine hair without any heavy silicones to weigh strands down. It features a biomimetic emollient blend that smooths and aligns individual hair fibers to boost overall shine, softness, and manageability.

*When used with PhD Shampoo

**After 1 use of Perfect Hair Day™ Weightless Mask vs. untreated

Clinical Results: Based on a 50-person, 2-week home use test:

- 97% of consumers agree Perfect Hair Day Weightless Hydrating Mask polishes and protects hair

- 95% of consumers agree Perfect Hair Day Weightless Hydrating Mask makes hair look healthier

- 95% of consumers agree Perfect Hair Day Weightless Hydrating Mask leaves hair more hydrated