Glossary
A practical guide to selecting facial oils based on skin type, covering the science of fatty acid composition, comedogenic ratings, absorption rates, and how to incorporate oils into your existing skincare routine without clogging pores or causing breakouts.
For oily and acne-prone skin: choose oils high in linoleic acid (an omega-6 fatty acid). Research shows that acne-prone skin produces sebum deficient in linoleic acid. Supplementing with linoleic-rich oils (grapeseed, hemp seed, rosehip) helps normalize sebum composition. Choose lightweight oils with comedogenic ratings of 0-1.
For dry and mature skin: choose oils high in oleic acid (an omega-9 fatty acid). Oleic-rich oils (avocado, macadamia, olive) penetrate deeply and provide intensive nourishment. These heavier oils replace declining sebum production in mature skin. Oils rich in palmitoleic acid (macadamia, sea buckthorn) specifically replenish age-depleted sebum components.
Face oils work best when applied to slightly damp skin (after toner or misting with water). The water provides hydration; the oil seals it in. Apply 3-5 drops, warm between palms, and press gently into the skin. Do not rub vigorously.
Face oils can be used as the last step of your routine (providing an occlusive seal), mixed into moisturizer (providing a lighter oil-moisturizer blend), or as a standalone product for minimalist routines. In the morning, apply under sunscreen. In the evening, apply as the final step or under an occlusive beeswax balm for maximum overnight benefit.
Counterintuitively, the right face oil can improve oily skin by supplementing deficient linoleic acid in your sebum, potentially signaling your skin to produce less sebum. The key is choosing lightweight, linoleic-rich oils rather than heavy oleic-rich oils. Jojoba, squalane, and grapeseed are excellent for oily skin.
After water-based products (cleanser, toner, serums, hyaluronic acid) but before or mixed with moisturizer. Oil products go after water products because oil repels water, preventing subsequent water-based products from absorbing. Some people use face oil as their final step, replacing moisturizer entirely.
Yes, but give the oil 2-3 minutes to absorb before applying makeup. Use the minimum amount needed (2-3 drops). Lightweight oils (squalane, jojoba) work best under makeup because they absorb quickly without leaving a slippery surface that causes makeup to slide.
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