CosmoSurf® polymers are made from natural and renewable starting materials. The polymers are not made using traditional free-radical based polymerization processes and are therefore free of residual vinyl-type monomers, initiators and catalysts.
CosmoSurf® polymers are excellent film forming polymers that provide up to 80 minutes of water resistance in emulsions and (alcohol based) spray products. CosmoSurf® is a flexible polymer platform, resulting in the ability to create and modify aesthetics, as well as adding on multiple benefits, such as pigment dispersion and avoiding ‘white-out’ upon application onto wet skin that is common for free-radical based film forming polymers.
Optical microscopy images show that TiO2 pigment in Caprylic/capric triglyceride forms large clusters and agglomerates. In the presence of CosmoSurf® polymers (in this particular CosmoSurf® DDG-20) the TiO2 clusters are broken up and a more uniform dispersion is achieved.
The effect of CosmoSurf® polymers on the white-out effect is demonstrated by applying two alcohol-based sunscreen onto wet skin. When a traditional free-radical based film former is used the white out effect is clearly visible on the left side of the arm. When CosmoSurf® polymers are used as film former, the white-out effect does not occur (right side of the arm).
The multi-function character of CosmoSurf® polymers allows for the creation of simpler formulations as separate ingredients, such as aesthetic modifiers and dispersing aids can be eliminated.
Application and uses
Sun care lotions: Provide film formation, water resistance, homogeneous film formation on wet skin and pigment dispersion
Sun care sprays: Provide film formation, water resistance, homogeneous film formation on wet skin and mitigate dry feel of alcohol-based products
Skin care lotions: Provide film formation, water resistance, homogeneous film formation on wet skin and pigment dispersion
The table below gives an overview of the film forming polymers in the CosmoSurf® product line-up, with the main characteristics that help in selecting the right product for the application.
Alcohol (spray) systems:
CosmoSurf® polymers are globally compliant as cosmetic ingredient, except for China
CosmoSurf® CE-100: Octyldodecyl Citrate Crosspolymer
CosmoSurf® CE-140: Stearyl/Octadodecyl Citrate Crosspolymer
CosmoSurf® CE-250: Benehyl/Octadodecyl Propanediol Citrate Crosspolymer
CosmoSurf® DDG 20: Bis-Octyldodecyl Dimer Dilinoleate/Propanediol Copolymer
CosmoSurf® DDG 28: Bis-Dodecylhexyldecyl Dimer Dilinoleate/Propanediol Copolymer
CosmoSurf® DGSi: Silicon Polyester 1
CosmoSurf® PG1-IS: Polyglyceryl Stearate/Isostearate dilinoleate crosspolymer