Polydimethylsiloxane (PDMS) in the Application of Organosilicons in Cosmetics
author: Leo
2025-07-11
Polydimethylsiloxane (PDMS), commonly known as silicone oil, is a classic organosilicon compound. Thanks to its unique physicochemical properties (e.g., low surface tension, excellent lubricity, breathability, chemical stability, and mildness), it plays a crucial role in the application of organosilicons in cosmetics. Its specific applications are as follows:
- Skin care products: Enhancing skin feel and stability
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Moisturizing and water-locking: PDMS forms a thin, breathable hydrophobic film on the skin surface, reducing water evaporation without clogging pores. It is ideal as a "skin feel modifier" in moisturizers and lotions, especially suitable for oily or combination skin, avoiding the greasiness of traditional oils.
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Soothe and repair: In skincare products for sensitive skin, its mildness reduces irritation from other active ingredients (e.g., acids, plant extracts) while isolating external environmental stimuli to aid barrier repair.
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Texture optimization: It improves the spreadability of creams and gels, making products easier to apply and reducing the "pilling effect" during application (common in serums and sunscreens).
- Color cosmetics: Enhancing makeup efficacy and user experience
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Foundations/concealers: When added, it improves the smoothness and skin adherence of products, making foundations easier to spread, reducing caking and floating, while the formed film helps makeup last longer and resists damage from sweat and oil.
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Lipsticks/lip glosses: It imparts a silky texture to lip products, reduces dryness, enhances color uniformity and adhesion, and extends wear time.
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Eye shadows/blushes: As a base ingredient, it enhances the dispersibility and spreadability of powders, making colors easier to blend and reducing fallout.
- Hair care products: Improving hair quality and combing experience
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Shampoos/conditioners: It forms a protective film on the hair surface, fills gaps in the cuticle, reduces split ends and breakage caused by friction, making hair smoother and easier to comb—especially suitable for dyed or permed damaged hair.
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Hair masks/serums: High-molecular-weight PDMS can deeply repair hair strands, increase shine, and resist the impact of humid and hot environments on hairstyles (e.g., reducing frizz).
- Sunscreen products: Strengthening protection and balancing skin feel
- As a carrier for sunscreens, it improves the dispersibility of sunscreen ingredients (e.g., zinc oxide, titanium dioxide), ensuring uniform coverage of the sunscreen film on the skin to enhance UV protection; it also reduces the greasiness of sunscreen products, making them feel fresher to use.
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