Ingredient glossary
Castor Oil
On your shelf ✓What Castor Oil does for your skin, who it suits, and what to watch for.
INCI: Ricinus Communis (Castor) Seed Oil
In short: Castor Oil delivers hydration and softening, suits most skin types, and the evidence behind it is limited.
- What it does
- Hydration, softening
- Best for
- Most skin types
- Evidence
- Limited
- How long
- Straight away
The Glow take
Can help, with honest expectations.
When your goal is deep, lasting hydration, Castor Oil can genuinely help, though the evidence is still thin, so keep expectations gentle. Gentle enough that most skin types can reach for it.
— Maya
What it does
- hydration
- softening
- texture
weak evidenceReviews and lab data show limited antibacterial activity against acne bacteria and low average comedogenic ratings yet practical guidance cautions its viscous texture can still congest susceptible skin and trigger contact allergy in some users.
Who it's for, and who should skip it
Tends to suit
- dry
- normal
Approach with care
- very oily
- acne prone
- pore clogging prone
- Irritation riskLow
How it fits each skin type
- DrySuits
- CombinationSuits
- OilyTake care
- SensitiveSuits
Take extra care if any of these apply to you: acne prone, pore clogging prone.
Where it fits in your routine
This one works on contact — there is nothing to wait for.
What that covers, and what it does not
Measured on: Surface smoothing and reduced water loss from the applied oil film.
A thick ricinoleic-acid triglyceride that forms a persistent film, so the emollient smoothing and the water-loss reduction are present as the oil is spread — physics, not a trial finding. Nothing else about it is timed: the congestion it can trigger in acne-prone skin, its contact-allergy risk and its cleansing use all lack dated human data, and the base itself rates the evidence weak. No trial with visits was identified for it as a leave-on emollient.
Mechanism; no human trial with time points identified for castor oil as a leave-on emollient.
Plays well with
- lighter oils
- humectants
Castor Oil, answered
Is Castor Oil safe during pregnancy?
Yes. Castor Oil is considered safe to use during pregnancy and breastfeeding. As with anything, if you are unsure it is worth a quick word with your doctor or midwife.
Who should avoid Castor Oil?
Approach Castor Oil with care if any of these apply to you: very oily, acne prone, and pore clogging prone.
What concentration of Castor Oil actually works?
Its concentration is rarely printed on the label, so use the ingredient list as your clue: near the top third it is likely doing real work, near the bottom it is more of a sprinkle.
Does it clog pores?
Thick but rates low; common in cleansing oils.
- This rating comes from old lab tests on the isolated ingredient, not the finished product.
- The full formula, how much is used, and your own skin all matter more than one number.
- If you are acne-prone it is worth noticing, not a reason to avoid it on sight.
Checking a whole product? Paste its list into the pore-clogging checker →
This, for every label you own
One ingredient is easy. A full label is where it gets confusing. The Ingredient Decoder reads any product and tells you the honest truth, ingredient by ingredient.