The Ultimate Guide to Omega Fatty Acids in Skincare

Omega Fatty Acids in Skincare: What You Need to Know

When people hear “omega fatty acids,” the first thought often goes to fish oil supplements rather than face creams or serums. But omega fatty acids are a rare class of ingredients that bridge the gap between internal health and external beauty. They offer benefits when taken orally and when applied topically, making them a versatile component in both diet and skincare routines.

What Are Omega Fatty Acids?

Omega fatty acids are a type of unsaturated fat characterized by the presence of one or more double bonds in their chemical structure. Those with a single double bond are known as monounsaturated fatty acids (MUFAs), while those with multiple are called polyunsaturated fatty acids (PUFAs). The main types relevant to skin health are:

• Omega-3 Fatty Acids: These include ALA (alpha-linolenic acid), EPA, and DHA. They're known for supporting cellular function, reducing inflammation, and contributing to overall skin and body health.

• Omega-6 Fatty Acids: Commonly found in vegetable oils, linoleic acid is the most prevalent omega-6 fatty acid. It plays a key role in maintaining the skin barrier.

• Omega-9 Fatty Acids: Oleic acid is the most familiar form of omega-9 and is typically found in plant-based oils like olive oil.

To know more on skincare ingredients shop our skincare ingredients dictionary on Amazon. Click here to shop.

Download our skincare ingredient scanner app from the google play store. Scan the ingredients at the back of the pack and know which ingredients are good or bad for your skin. Click here to download.

Key Differences

Omega-3 and omega-6 fatty acids are considered “essential” because the body cannot produce them on its own; they must be obtained through diet or topical application. Omega-9, on the other hand, can be synthesized by the body. While their chemical classifications differ, all three types offer overlapping skin benefits when used topically, especially in terms of hydration and barrier repair. That said, omega-3 and omega-6 are more widely studied in the context of skin health.

Benefits for the Skin

Much of what is known about omega fatty acids comes from observing skin conditions linked to deficiency. A lack of these essential fats can impair the skin barrier, increase water loss, and lead to dryness and irritation. Topically applied omega-rich oils help restore barrier function, improve hydration, and smooth the skin’s surface. They may also offer anti-inflammatory and antibacterial effects, making them useful for sensitive or compromised skin—though more clinical research is needed.

Potential Drawbacks

While many skincare products now feature omega fatty acids, they’re often delivered via natural oils like rosehip, sunflower, or safflower. Some of these oils, despite being rich in skin-loving omegas, can clog pores—especially in acne-prone individuals. For instance, olive oil (high in omega-9) is considered comedogenic. Additionally, certain oils may cause irritation or allergic reactions in sensitive skin types.

How to Incorporate Them

Look for products that include omega fatty acids either as isolated ingredients or within plant-based oils. Popular options include:

• Safflower oil (rich in omega-6)

• Sunflower oil (omega-6 and -9)

• Rosehip oil (omega-3 and -6)

• Blackcurrant seed oil (omega-6)

Paula's Choice RESIST Omega+ Complex Serum

Many skincare brands are now incorporating omega-3, -6, and -9 fatty acids directly into their serums and moisturizers. When combined with ceramides, these formulations offer enhanced support for strengthening the skin barrier. Click here to buy.

Biossance Squalane + Omega Repair Cream 

This is another formulation that incorporates omega fatty acids directly into the product. It features linoleic acid (omega-6), oleic acid (omega-9), and linolenic acid (omega-3), offering a comprehensive blend in one fast-absorbing, nourishing moisturizer. Click here to buy.

Farmacy Honey Grail Ultra-Hydrating Face Oil

This formula features a variety of omega-rich oils, including ones that deliver both omega-3 and omega-6 fatty acids. It also offers antioxidant benefits and is a non-comedogenic choice suitable for most skin types. Click here to buy.

The Takeaway

While there’s limited clinical research specifically focused on the topical benefits of omega fatty acids—especially compared to more established skincare ingredients like vitamin C or retinoids—they may still be valuable for those with sensitive, dry, or barrier-compromised skin. Additionally, incorporating omega-rich foods like fish, nuts, and seeds into your diet remains a smart move for overall skin health, reinforcing the idea that healthy skin starts from within.

These can be used in place of a moisturizer or layered over one for added nourishment.

Kaye's Beauty Book is here to help you choose better products that suit your skin, hair and lifestyle. All of the products mentioned are carefully researched and selected to ensure that the most credible information comes to you. If you do buy a product from one of our links, Kaye's Beauty Book may earn a commission.

II DISCLAIMER: Every skin is different, not everything works for everybody. I recommend you test the product before completely using any new product. II