Skip to content
JournalBotanica home

Botanicals for the face

Skin

Face oils, plant extracts and the claims made for them, graded against the research. Start with dryness, scars or sensitivity, or browse everything below.

19 articles · 12 botanicals

Long Read · Rosehip

Rosehip oil for your face: what it can and can’t do

Journal Botanica Editors · Last reviewed November 3, 2026 · 12 sources

Rosehip seed oil is a light, fast-absorbing vegetable oil pressed from the seeds of wild roses. It is commonly prized in skincare for its unsaturated fatty-acid profile, carotenoids, and small amounts of vitamin A precursors, which give it a thinner feel than heavier vegetable oils and a pale orange tint.

Expectations for rosehip oil range from sensible—smoother, less dry skin—to optimistic—fading scars and lines. The evidence behind those claims is mixed: there is credible preclinical work and a few small human studies, but much of the human data tests multi-ingredient products or oral rosehip preparations rather than the plain topical oil. [1, 2, 3, 4] Continue reading

Botanicals for skin

Full Index →
  • Rosehip

    Rosa canina

    Light seed oil with linoleic punch and folklore charm

  • Jojoba

    Simmondsia chinensis

    Desert liquid wax that softens skin and tames hair

  • Castor

    Ricinus communis

    Thick, sticky, mostly ricinoleic; nicer conditioner than grower

  • Aloe

    Aloe vera

    Leaf gel darling; latex wallflower. Soothing, with caveats.

  • Calendula

    Calendula officinalis

    Cottage-garden marigold with diaper-cream credentials

  • Hemp seed

    Cannabis sativa

    Linoleic-rich, fast-absorbing oil from humble hemp seeds

  • Marula

    Sclerocarya birrea

    Silky, oleic‑rich oil from the marula kernel

  • Oat

    Avena sativa

    Finely milled oats for calmer, better‑behaved skin

  • Prickly pear

    Opuntia ficus-indica

    Tiny seeds, big price, a linoleic‑rich cactus oil

  • Shea

    Vitellaria paradoxa

    Plant butter that locks in bath-time moisture.

  • Argan

    Argania spinosa

    Morocco’s liquid gold for soft skin and shinier strands

  • Sea buckthorn

    Hippophae rhamnoides

    Orange pulp, pale seeds: one shrub, two distinct oils

Everything on skin

  1. Evidence Check

    • Skin
    • Body

    Oat

    Oat and colloidal oatmeal: the botanical dermatologists actually recommend

    Colloidal oatmeal is one of the few botanicals with randomized trials and mechanistic lab work supporting its use for dry, itchy and eczema-prone skin. The strongest evidence is for formulated topical products containing colloidal oat or its extracts; many studies test finished products or combination formulas rather than isolated oat constituents.

    3 min read

  2. Origins

    • Skin
    • Body

    Calendula

    Calendula: the marigold in your diaper cream, examined

    Calendula officinalis (pot marigold) has long been used on wounds and rashes. Recent laboratory and animal work is extensive; human trials are small and formulation-dependent, so clinical conclusions are tentative.

    4 min read

  3. Evidence Check

    • Skin
    • Body

    Tea tree

    Tea tree oil: real antimicrobial, real allergy risk

    Laboratory work and small clinical trials support tea tree oil’s antibacterial and antifungal activity, and a recent meta-analysis found topical tea tree reduced acne severity; reviews and formulation studies also warn of local irritation and stability problems. Current evidence is useful but limited, and safety concerns in topical use are repeatedly raised.

    3 min read

  4. Index Explainer

    • Skin
    • Body

    Shea

    Shea butter: why it works for dry skin

    Shea butter works mainly as an occlusive lipid-rich butter with some minor bioactive components; clinical studies in babies and children and several small trials of mixed creams support its role as an effective emollient, but many trials test blends rather than shea alone.

    4 min read

  5. Research Desk

    • Skin

    Face oils

    Face oils for oily skin: linoleic vs. oleic, ranked

    The idea that 'linoleic oils are better for oily, acne-prone skin' rests largely on small lab studies and a few pilot clinical observations; the literature here is promising but mostly preclinical and frequently tests oils inside blends or nano‑formulations.

    4 min read

  6. Evidence Check

    • Skin
    • Body

    Aloe

    Aloe vera: what the evidence says beyond sunburn

    Aloe vera has more controlled human trials than many botanicals, but the strongest, most consistent signals are in wound‑care and post‑surgical healing rather than glamorous skin fixes. Much of the recent work is engineering (dressings, gels, vesicles) or preclinical; the human trials that exist are small and context‑specific.

    5 min read

  7. Index Explainer

    • Skin

    Squalane

    Squalane vs. squalene: the plant-derived moisturizer everyone mixes up

    Squalene is a natural unsaturated lipid in skin oils that oxidizes; squalane is the hydrogenated, far more stable form used in cosmetics. The plant sources and stability issues behind that one-letter swap are mostly documented in laboratory and oil‑chemistry studies, with little direct human testing of squalane alone.

    4 min read

  8. Index Explainer

    • Skin
    • Hair

    Jojoba

    Jojoba isn’t an oil, and why that matters for your skin

    Jojoba is chemically a liquid wax made largely of wax esters, the same lipid class that contributes substantially to human sebum. That chemical kinship and jojoba’s compositional stability explain many of its practical advantages, but controlled human trials showing it ‘balances’ oil production are lacking.

    5 min read

  9. Long Read

    • Skin

    Prickly pear

    Prickly pear seed oil: the most expensive oil in your cabinet, examined

    Prickly pear seed oil is chemically distinctive—very high in linoleic acid and γ-tocopherol—but most evidence for skin benefit comes from lab and animal work; robust human trials comparing it to cheaper oils are absent. (See composition and extraction studies.)

    4 min read

  10. Myth Busting

    • Skin

    Castor oil

    Castor oil and acne: why oil-cleansing advice goes wrong

    Castor-heavy oil cleansing can remove makeup and even affect drug penetration, but the notion that castor oil ‘‘draws out’’ toxins or reliably clears acne is not supported by the research cited here. Evidence for helpful effects is patchy and mostly lab or formulation-level.

    4 min read

  11. Evidence Check

    • Skin

    Castor oil

    Castor oil on your face: cleanser, moisturizer or myth?

    Most evidence for castor oil’s effects comes from laboratory work, formulation studies, ocular or oral/denture trials, and material science—not from controlled tests on facial skin. That makes its actions plausible but not precisely mapped to regular face use.

    3 min read

  12. Origins

    • Skin

    Rosehip

    From Andean hedgerows to vanity shelves: a short history of rosehip

    Rosehip has long served as food and a wartime vitamin source in Europe; modern cosmetic interest rests on laboratory, animal and a few human studies that show antioxidant, anti-inflammatory and wound‑healing potential, but most topical claims still rest on preclinical work.

    4 min read

  13. Index Explainer

    • Skin

    Face oils

    How to use a face oil: before or after moisturizer, how many drops, when

    A face oil is an occlusive finish: it doesn’t add water, it helps trap it. That makes it sensible as the last step on slightly damp skin. Lab work on rosehip and jojoba oils speaks to stability and safety; few studies test them alone as facial oils, so most practical rules come from how oils behave, not trials.

    5 min read

  15. Index Explainer

    • Skin

    Rosehip

    Cold-pressed vs. refined: how to tell good rosehip oil by color, smell and label

    The pigments and fragile polyunsaturated fats that make rosehip oil amber, light and aromatic are easily lost in processing and storage. Lab studies of cold‑pressed rosehip oils show measurable carotenoids, tocopherols and volatile terpenes; a clear, scentless product often signals those components have been removed or reduced.

    5 min read

  16. Evidence Check

    • Skin

    Rosehip

    Will rosehip oil break you out? Comedogenicity, explained

    Online 'comedogenic scores' are crude and dated; the best evidence on rosehip oil and breakouts comes from lab and animal studies, plus analyses of oil chemistry—not from controlled human trials of rosehip oil alone.

    4 min read

  17. Myth Busting

    • Skin

    Rosehip

    Rosehip, retinol and the “natural retinol” myth

    Many product pages call rosehip oil “nature’s retinol.” The papers supplied here show rosehip as a source of carotenoids, vitamin C, tocopherols and PUFAs and include small in‑vitro and animal studies of wound healing, hair growth and antioxidant activity. They do not, in themselves, establish that rosehip contains meaningful retinoic acid or that it reproduces the clinical effects of pharmaceutical retinoids.

    3 min read

  18. Evidence Check

    • Skin

    Rosehip

    Does rosehip oil fade scars? What the surgical-scar trials found

    Small human trials are the origin of rosehip oil’s scar reputation, but nearly all supporting work is laboratory or animal studies, or tests of formulations rather than straight comparisons in people. The evidence is suggestive but narrow.

    4 min read