Scan the back of almost any good moisturiser, sunscreen or serum and you will eventually meet it: caprylic/capric triglyceride. It rarely gets top billing. It is not the acid, the retinoid or the vitamin that sells the bottle. Yet it is often doing the job that makes everything else feel pleasant on your skin — and it turns up across a surprising amount of the REFORM Skincare range.
Here is what it is, why formulators reach for it, and where you will find it.
What exactly is it?
Caprylic/capric triglyceride is the mixed triester of glycerin with caprylic acid (C8) and capric acid (C10) — the two medium-chain fatty acids named in the ingredient itself.
In plain terms: take coconut oil or palm kernel oil, split it apart, and separate out the shorter, lighter fatty acid chains by fractional distillation. Bind those back to glycerin and you get a clear, colourless, odourless oil that behaves nothing like the coconut oil it came from.
That distinction matters more than it sounds. Whole coconut oil is roughly half lauric acid, a longer-chain fatty acid widely considered comedogenic for many skin types. The refining process removes that heavier fraction, leaving behind a light, stable, non-greasy oil with excellent slip and absorbency. Because the fatty acids are saturated, it also resists oxidation — it will not go rancid on your shelf the way many plant oils do, which is why it is valued as a carrier for oxygen-sensitive actives such as retinol and vitamin C.
On an ingredient list it may also appear as fractionated coconut oil — though technically that is a different material, and the terms are often used loosely. Under EU cosmetics regulation it is classified as a skin-conditioning agent (occlusive), a solvent and a fragrance component.
What it does for skin
It softens, immediately. This is its core function as an emollient. Emollients fill the gaps between the cells in the top layer of skin, so the surface feels smooth and supple rather than rough and tight. It spreads easily and absorbs well, so it leaves skin comfortable rather than sitting on the surface.
It helps hold water in. The technical term is occlusive: the oil forms a light film over the skin that slows water from evaporating away. A 2023 study in Life found that an emulsion containing 15% caprylic/capric triglyceride increased superficial skin hydration and measurably reduced transepidermal water loss — the water escaping through the skin. That film is a barrier aid, not a seal: compared with petrolatum or mineral oil, this oil remains permeable, so it supports the skin rather than smothering it.
It tends to suit acne-prone skin. On the standard comedogenic scale it sits at around 1 out of 5 — very low. Allied with that, it is widely regarded as non-irritating and non-sensitising, and it is rated safe by the Cosmetic Ingredient Review panel. If you have reacted badly to rich plant oils in the past, this is generally one of the gentler options.
It carries actives and improves texture. As a solvent it dissolves oil-soluble ingredients that would not otherwise blend into a water-based formula, and it adjusts how a product pours and glides. It is also a mild penetration enhancer — meaning the rest of the formula travels into the skin more effectively.
A note on the antimicrobial claim. Caprylic and capric acids do show activity against certain microbes in laboratory studies. That is genuinely interesting, but it is not the same as treating acne, and no skincare oil should be sold to you on that basis. Think of it as a useful supporting player, not a treatment.
Who should be cautious? Nobody, broadly — but a small number of people react to coconut-derived ingredients. If you know you do, it is worth patch testing. A medical concern like eczema or rosacea deserves a clinician's eye rather than a blog post.
Where it appears in the REFORM range
REFORM builds its formulas around leaving skin supported, so it is no surprise that caprylic/capric triglyceride shows up in the moisturising and protective end of the range:
- SPF 30 Mineral Sunscreen — listed explicitly as a lightweight emollient that nourishes the skin, reinforces the moisture barrier and keeps the finish smooth rather than greasy. Well worth knowing if you have avoided SPF because of heavy, tacky textures.
- Anti-Blemish Crème — appears among the hydration and skin-supporting ingredients. A useful reminder that a product designed for breakout-prone skin still needs proper emollience to avoid stripping the barrier, which is what often drives more oil production.
- Intensive Moisturiser — part of the barrier-supporting base in this richer formula, aimed at drier and dehydrated skin.
- Hydrate & Protect Kit — the sunscreen component within the kit lists caprylic/capric triglyceride alongside its UV filters.
- Everyday Moisturiser — sits comfortably in the light hydration approach the range favours across daily formulas.
Check the label on the bottle you have in front of you to be sure. Formulations are revised, and the current ingredient list is the one that counts.
Why formulators keep coming back to it
Caprylic/capric triglyceride is popular for the same reason a good bass player is popular: it does not show off, it makes everyone else sound better. It gives a formula weight and glide without heaviness, it keeps actives stable, it resists spoiling, and it does all this while remaining low-risk for the skin types most prone to reacting.
If your skin has ever rejected a heavy oil but still felt tight and uncomfortable by mid-afternoon, this is a good ingredient to look for. It is the reason a product can feel light and still do something meaningful.
Not a substitute for personalised medical advice. If you have a diagnosed skin condition or are using prescription topicals, speak to your dermatologist before changing your routine.
