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UV-A and UV-B radiation both play a role in the photodamage of hair. Shorter wavelength, more powerful UV-B radiation (290-320nm) penetrates the hair cuticle, resulting in a loss of natural hair colour and tensile strength. Exposure to UV-A radiation (320-400nm) can cause a significant reduction in the vibrancy and depth of colour of dyed hair.


Medvance offers two of the most widely used and effective Benzophenone-based UV filters to help reduce the damaging effects of the sun and provide colour-fade protection for dyed hair.



Ben-3 - General oil-soluble UV-A and UV-B filter for hair and skincare products.

Ben-3 finds applications in hair care forumlations as well as skin creams, decorative cosmetics with sun protection factor (SPF) and as preservative (UV-filter) for UV-sensitive preparations.


Chemical Structure:

Ben 3 checmical structure

Molecular Formula:

C14H12O3

Molecular Weight:

228.25

Name of the product:

Ben-3

Chemical Name:

2-hydroxy-4-methoxy benzophenone

IUPAC Nomenclature:

(2-hydroxy-4-methoxy-phenyl)-phenyl-methanone

INCI Name:

Benzophenone-3

USAN:

Oxybenzone

INN:

Oxybenzone

CAS No:

131-57-7

EINECS No:

205-031-5

Ben-4 - Water-soluble broad spectrum UV-A and UV-B filter for hair and skincare products.

Helps protect the colour and integrity of water-based personal care formulations, particually those in clear packaging. Used as UV-stabiliser in hair care and skin care formulations.


Chemical Structure:

Ben 4 checmical structure

Molecular Formula:

C14 H12 O6 S

Molecular Weight:

308.31

Name of the product:

Ben-4

Chemical Name:

2-Hydroxy-4-Methoxybenzophenone-5-sulfonic acid

IUPAC Nomenclature:

5-benzoyl-4-hydroxy-2-methoxy-benzenesulfonic acid

INCI Name:

Benzophenone-4

USAN:

Sulisobenzone

INN:

Sulisobenzone

CAS No:

4065-45-6

EINECS No:

223-772-2



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