Calendula Oil Stretch Mark Blends: What the Trials Found

We found no trial showing that calendula oil, or any home-made oil blend containing it, stops stretch marks from forming. The wider evidence on topical products for stretch marks in pregnancy is mixed and mostly weak, and the standard European herbal guidance on calendula advises against use in pregnancy because safety data are missing. So this page gives you the evidence first, then an honest way to massage an oil onto your belly if you want to, and the people to ask before you do.

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What the trials found

Stretch marks in pregnancy are common: one survey of 421 first-time mothers in a Turkish hospital found them in 67%, with body mass index in pregnancy and a mother or sister with stretch marks among the associated factors (Kocaöz et al., 2020). The Cochrane Collaboration's review of topical preparations looked at six trials involving 800 women. Women using preparations with active ingredients did not differ significantly in developing stretch marks from women given placebo or nothing (average risk ratio 0.74, 95% confidence interval 0.53 to 1.03; five trials, 474 women), and the review stated that no preparation has yet been shown to be effective in preventing the development of stretch marks (Brennan et al., Cochrane, 2012). A 2015 review reached a similar place: limited evidence for centella and possibly bitter almond oil massage, weak evidence for hyaluronic acid, tretinoin limited by its pregnancy category, and cocoa butter and olive oil not effective (Korgavkar and Wang, Br J Dermatol).

Newer oil-specific studies do not line up neatly:

StudyDesignWhat it reported
Solt Kırca and Kanza Gül, 2022Randomised trial, 156 first-time mothers, olive oil on the abdomen twice a day from the third trimester versus no interventionStretch-mark incidence 50% with olive oil versus 69.2% in the control group, and lower severity scores in the olive oil group
Güner Emül and Kaplan Serin, 2026Systematic review of four randomised trials, 671 pregnant participantsCoconut oil was effective; rose, sesame and sweet almond oils were not; the authors call for larger, blinded trials

Read together, these say two things. First, an oil massage has some support in single trials, and the olive oil result contradicts the 2015 review's conclusion on olive oil. Second, the effect, where it appears, is attributed to specific oils in specific trials, and none of the studies we found tested calendula. Whether any benefit comes from the oil, from the daily massage, or from chance in small trials is not something these studies can separate. That last sentence is our reasoning, not a quoted finding.

What the calendula record says about pregnancy

The EU herbal committee states that safety during pregnancy and lactation has not been established, and in the absence of sufficient data use is not recommended (EMA/HMPC, 2018). Its assessment report notes that the ESCOP herbal reference raised no objections to external use but had no data to confirm safety, while the committee itself cited an animal developmental study of an ethanolic extract that showed maternal toxicity. That is a regulatory position built on missing data for licensed herbal medicines, not a finding that calendula oil harmed anyone. Memorial Sloan Kettering's herb page likewise advises that people avoid calendula during pregnancy and breastfeeding because safety data are lacking. NIH's LactMed database adds that allergic reactions, including cross-reactions with chrysanthemums, daisies and marigolds, occur rarely.

Put those next to the trials and the position we hold is simple. Calendula is not a pregnancy product: there is no evidence it helps, and the available guidance recommends against it. We make the oil and can tell you about the flower, the drying and the batch paperwork; whether it suits your pregnancy is a question for your OB/GYN or midwife, who know your history, and we would defer to them.

If you decide to massage an oil on anyway

Some readers will want a daily oil routine regardless, for how it feels on tight skin. That is a reasonable personal choice once you have the evidence above and have checked with your care provider. If so, the following rules come from the sources rather than from a recipe:

The part an oil cannot fix

The same survey that found stretch marks in 67% of first-time mothers links them to factors no cream changes: family history and body mass index in pregnancy. Korgavkar and Wang suggest women with such risk factors are the appropriate target for prevention research, and that reliable methods are scarce. If stretch marks already exist, they fade slowly from red or purple to pale, as the Cochrane review describes, and any treatment decision for them belongs with a dermatologist. For related questions see the step-by-step stretch mark article, the pregnancy and postpartum guide and the pregnancy FAQ.

If you take one thing from this: the evidence for any oil on stretch marks is thin, none of it is about calendula, and pregnancy is the one situation where we would ask you to check with a professional before using our oil at all.

Calendula oil bottle

Calendula Oil

Nature's Golden Botanical, bottled: small-batch calendula oil in sizes from 0.5 oz to bulk.

From $13.99

Shop Calendula Oil →

Sources & Further Reading