Silicones in skincare show up everywhere—moisturizers, primers, sunscreens, serums, even baby products—yet they remain some of the most misunderstood ingredients in beauty. You’ve probably heard claims that silicones “suffocate the skin,” “cause acne,” or “create a fake barrier.” None of these is supported by scientific evidence.
Silicones are smooth, flexible molecules derived from silica—the same mineral found in sand. Through processing, they become lightweight, stable ingredients that dramatically improve how products feel and perform on the skin.
They’re not oils, and they’re not waxes. They form their own category entirely. On ingredient lists, you’ll often see names like:
Silicones are included in cosmetic formulations because they offer benefits that are difficult to achieve with natural ingredients:
Standard silicones can change the feel of a moisturizer, but in makeup, they do even more. Ingredients like Phenyl Trimethicone interact with light to create slip, shine, and that smooth, reflective finish you see in primers, liquid highlighters, and glosses. They also help pigments spread evenly, prevent patchiness, and keep products from clinging to dry areas.
This is why silicones are so important in makeup. Each type brings something different—glide, shine, blurring, film‑forming—and together they create color cosmetics that apply more smoothly, wear longer, and look more polished than what you can achieve with oils or butters alone.
Silicones sit on top of the skin in a smooth, breathable layer and do not penetrate into the pores. If a product containing silicones breaks you out, the acne is likely caused by other factors in the formulation, such as:
Pro Tip for Application: While silicones don’t clog pores, they do sit on the surface of the skin. For the best results, always apply them to clean, dry skin. Layering silicones over leftover sunscreen, makeup, excess sebum, or surface microbes can trap that debris against the skin, which may interfere with the microbiome and make the product feel heavier or less smooth.
No. While silicones excel at locking in hydration, they do not trap heat or sweat. Because their molecular structure allows air and water vapor to pass through, medical-grade silicone sheets are the gold standard for scar sheets and wound dressings. If silicones actually suffocated the skin, they wouldn’t be used to heal compromised skin in hospitals.
Yes. Because they are non-comedogenic, they will not worsen regular acne. Furthermore, silicones cannot be metabolized by skin yeast, making them fungal acne-safe. They are completely inert and microbiome-neutral, meaning they won’t disrupt your skin’s natural bacterial balance.
You will benefit greatly from silicone-based products if you have:
Choosing silicone-free skincare or makeup is entirely a matter of personal preference, not a safety concern. You might prefer silicone-free options if you want:
Silicones are safe, stable, and incredibly useful ingredients that support the skin barrier, reduce irritation, and improve product performance. They don’t clog pores, don’t suffocate the skin, and don’t worsen fungal acne.
You don’t have to use them in your routine—but you certainly don’t need to fear them.
If you enjoy understanding how ingredients really work on the skin, building a solid foundation in skincare is the best place to start. Inside my book, Simple DIY Skincare: The Complete Guide to Easy, Natural Recipes for Beginners, you’ll find 15 silicone‑free recipes designed to nourish, protect, and rebuild the skin barrier using straightforward, beginner‑friendly methods.
Mastering these basics now will give you a strong grounding for what comes next. In upcoming recipes, I’ll show you how to make makeup (skincare with color)—including how to safely work with high‑performance silicones to create smooth, long‑wearing formulas you can make confidently at home.