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Protesil™ LH is a novel hybrid polymer created from the fusion of silk peptides and silicone. It can be used as a multi-functional hair conditioning ingredient. It has excellent adsorption to hair and forms a thin film on the surface of hair, which is glossy, long-lasting, and water-resistant. This has various effects such as repairing, moisturizing, color-protection, shine and anti-static effect. This product is preservative free. It is developed and manufactured in Japan by SEIWA KASEI.

INCI Name: Hydrolyzed Silk PG-Propyl Methylsilanediol Crosspolymer

Functions: Adsorbent, Conditioner, Film Former

Labeling Claims: Preservative-free

Benefit Claims: Color & Look, Color Protection, Conditioning, Film Forming, Gloss, Long Lasting, Moisturizing, Refreshing, Repairing, Shine & Radiance, Silky Feel, Texturizing, Water Repellency

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Knowde Enhanced TDS

Identification & Functionality

Carrier
Cosmetic Ingredients Functions

Features & Benefits

Labeling Claims
Product Background

Protesil LH prevents silicone buildup and keeps beautiful hair

Protesil hair care type is a “silicone-support ingredient”, because it suppresses buildup of silicone which excessively accumulates on the hair surface and keeps good texture even after continuous use.

Hair color Boost and Keep Continue the vivid hair color

Just a small amount of Protesil hair care type can coat hair thinly and evenly with a silky film, curbing the irregular reflection of light, it helps realize a more vivid and translucent hair color and prevents color fading.

Applications & Uses

Technical Details & Test Data

Mechanism of Action

We show how to boost hair color-shade and prevent color fading. 
Protesil LH coats hair surface uniformly, as a result, the irregular reflection of light decreases and vivid color keeps long. In addition, coating film maintains color component inside the hair, it helps realize a long-term maintenance dyed hair color.

Seiwa Kasei Protesil LH Mechanism of Action

Efficacy Tests

We tested non-silicone-buildup effect of Protesil LH.
Damaged hair was treated with commonly used shampoo. Then, it was treated with conditioner containing silicone or conditioner containing both silicone and Protesil LH ten times. Amounts of Si were measured by EDS (Instrument of energy-dispersive X-ray spectroscopy).

Seiwa Kasei Protesil LH Efficacy Tests

Packaging & Availability

Regional Availability
  • Africa
  • Middle East