The Beauty & Personal Care Brand Builder Series

Ingredient Deep Dive

Diphenylsiloxy Phenyl Trimethicone

The Beauty & Personal Care Brand Builder Series

Ingredient Deep Dive

Diphenylsiloxy Phenyl Trimethicone

The High-Gloss Silicone

Diphenylsiloxy Phenyl Trimethicone is a high-refractive-index silicone used to add brilliant shine, smoothness and a luxurious feel — especially in hair and lip products.

It coats and smooths the surface, delivers intense gloss and slip, and conditions without a heavy, greasy feel.

Quick Insights

Ingredient Rating:

GOOD

Type of Ingredient:

Conditioner and Emollient

Intended Function:

A high-refractive-index silicone used for brilliant shine, smoothing and conditioning in hair and lip products.

Common Applications:

Used in moisturizers, serums and masks and treatment formulas.

Target Audience:

Brands formulating hair shine serums, glosses and luxurious lip products.

Also Known As:

Diphenylsiloxy Phenyl Trimethicone

Benefits of Diphenylsiloxy Phenyl Trimethicone

A high-gloss, conditioning silicone for brilliant shine and a smooth, luxe feel.

Brilliant Shine: Its high refractive index delivers intense gloss to hair and lips.
Smoothing: Coats and smooths the cuticle or lip surface.
Conditioning: Softens and conditions with elegant slip.
Non-Greasy: A luxurious feel without heaviness.
Frizz Control: Helps tame and smooth hair.

How It Works

Phenyl-substituted silicones like this have a high refractive index, so light reflects strongly off the film they form — producing the mirror-like gloss prized in serums, shine sprays and lip products, while the silicone backbone smooths and conditions the surface.

Formulating with Diphenylsiloxy Phenyl Trimethicone

Diphenylsiloxy Phenyl Trimethicone is used in the oil phase at low to moderate levels for gloss, slip and conditioning in hair serums, shine products and lip formulas. Observe good manufacturing and preservation practice.

Safety Analysis

Diphenylsiloxy Phenyl Trimethicone is well tolerated with a strong safety profile. As always, substantiate the finished product’s safety (e.g. patch / HRIPT testing) in line with MoCRA requirements.

References

https://incidecoder.com/ingredients/diphenylsiloxy-phenyl-trimethicone

https://cosmeticanalysis.com/cosmetic-ingredients/diphenylsiloxy-phenyl-trimethi…

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