A gentle, probiotic-derived ingredient from salt-loving bacteria that may help calm and strengthen the skin barrier.
Irritation
low
Source
biotech
Beauty ingredient research
Browse the review database to understand what an ingredient is, what it does in a beauty formula, when it is useful, and when it deserves caution across skincare, haircare, bodycare, makeup, and more.
20769
Reviewed ingredients
524
Low-concern standouts
2884
Need usage caution
A gentle, probiotic-derived ingredient from salt-loving bacteria that may help calm and strengthen the skin barrier.
Irritation
low
Source
biotech
A mild, floral water that may offer soothing and antioxidant benefits, but lacks strong clinical evidence for specific skincare claims.
Irritation
low
Source
natural
A mild, aromatic floral water that may offer soothing and antioxidant benefits, but lacks strong clinical evidence for specific skincare claims.
Irritation
low
Source
natural
A gentle, aromatic hydrosol that may help calm skin and provide antioxidant support, but research is limited.
Irritation
low
Source
natural
A mild, aromatic hydrosol that can help calm and soothe the skin while providing a pleasant natural scent.
Irritation
low
Source
natural
Soothing Agent
CHAMOMILLA RECUTITA/ROSMARINUS OFFICINALIS/SALVIA OFFICINALIS/THYMUS VULGARIS EXTRACT
A gentle botanical blend that may help calm irritation and protect skin from environmental stress, but individual sensitivity is possible.
Irritation
low
Source
natural
Antioxidant
Angelica Acutiloba Root/Citrus Aurantium Amara Fruit/Coptis Japonica Root/Forsythia Viridissima Fruit/Gardenia Florida Fruit/Glycyrrhiza Glabra Root/Mentha Arvensis Leaf/Paeonia Lactiflora Root/Platycodon Grandiflorus Root/Rehmannia Glutinosa Root/Scutellaria Baicalensis Root Extract
A multi-herb blend that may help calm skin and fight free radicals, but research on the specific combination is limited.
Irritation
low
Source
natural
Antioxidant
Angelica Acutiloba Root Extract, Paeonia Lactiflora Root Extract, Rehmannia Glutinosa Root Extract, Scutellaria Baicalensis Root Extract, Cnidium Officinale Rhizome Extract, Coptis Chinensis Rhizome Extract, Gardenia Jasminoides Fruit Extract, Phellodendron Chinense Bark Extract
A traditional herbal blend that may help calm irritation and provide antioxidant protection, though individual herb concentrations are unknown.
Irritation
low
Source
natural
Antioxidant
Cimicifuga Dahurica Root/Forsythia Virdissima Fruit/Glycyrrhiza Glabra Root/Paeonia Lactiflora Root/Platycodon Grandiflorus Root/Pueraria Lobata Root Extract
A gentle, antioxidant-rich botanical blend that may help calm skin and protect against environmental stress, though individual herb concentrations are unlisted.
Irritation
low
Source
natural
A synthetic azulene derivative that adds a subtle fragrance and may offer mild soothing benefits, but research is limited and it's best for those without fragrance sensitivities.
Irritation
low
Source
synthetic
Hirudinea Extract is a novel, natural ingredient with potential soothing benefits, but scientific evidence is limited and it may not be suitable for everyone due to ethical or allergy concerns.
Irritation
low
Source
natural
A mild floral water that may help calm and hydrate skin, but scientific backing is limited.
Irritation
low
Source
natural
Antioxidant
Honey/(Panax Ginseng/Rehmannia Glutinosa) Root/Poria Cocos Extract
A soothing, antioxidant-rich blend of honey and herbal roots that helps calm skin and support a healthy-looking complexion.
Irritation
low
Source
mixed
Soothing agent
LACTOBACILLUS/HONEY/MATRICARIA CHAMOMILLA FLOWER FERMENT FILTRATE
A gentle fermented ingredient that may help calm and protect skin, but research is still limited.
Irritation
low
Source
biotech
Hops oil offers gentle soothing and antioxidant benefits, but its strong scent and potential for skin sensitivity in high concentrations mean it's best used in small amounts.
Irritation
low
Source
natural
A gentle, soothing floral water that may help calm irritated skin and provide mild astringent benefits, but research on its cosmetic efficacy is limited.
Irritation
low
Source
natural
A gentle, silica-rich plant juice that may help soothe skin and support a healthy-looking complexion, but its benefits are mostly anecdotal.
Irritation
low
Source
natural
Soothing agent
Bacillus/Houttuynia Cordata Leaf Extract/Volcanic Ash Ferment Filtrate
A fermented botanical-mineral blend that may help calm irritation and provide antioxidant protection, though research is still emerging.
Irritation
low
Source
biotech
Soothing agent
LACTOBACILLUS/HOUTTUYNIA CORDATA LEAF EXTRACT FERMENT FILTRATE
A fermented botanical extract that may calm irritation and support a healthy skin barrier, though research is still early.
Irritation
low
Source
biotech
A gentle, processed aloe ingredient that hydrates and calms skin with low irritation risk.
Irritation
low
Source
natural
A gentle, plant-derived humectant that pulls moisture into the skin and may help calm irritation.
Irritation
low
Source
natural
A gentle, water-soluble extract from bottle gourd that helps hydrate and calm the skin, though research is still emerging.
Irritation
low
Source
natural
A gentle botanical extract with antioxidant and soothing potential, but research is limited to lab studies.
Irritation
low
Source
natural
A gentle, antioxidant-rich ingredient derived from mugwort that may help calm irritated skin and support a healthy-looking complexion.
Irritation
low
Source
natural
A gentle, antioxidant-rich botanical extract that may help calm irritation and support skin barrier function.
Irritation
low
Source
natural
Hydrolyzed oats are a gentle, multi-tasking ingredient that soothes, moisturizes, and protects sensitive or irritated skin.
Irritation
low
Source
natural
A gentle, antioxidant-rich flower extract that helps calm and protect skin, though research is still emerging.
Irritation
low
Source
natural
A gentle, antioxidant-rich extract that soothes and hydrates, ideal for sensitive or dry skin types.
Irritation
low
Source
natural
A gentle, fermented yeast protein that supports skin hydration and soothes irritation, ideal for sensitive or stressed skin.
Irritation
low
Source
biotech
Ictasol is a traditional ingredient used to soothe and draw out impurities, but it has a strong odor and may irritate sensitive skin.
Irritation
moderate
Source
natural
A gentle, antioxidant-rich botanical extract that helps calm irritation and protect skin from environmental stress.
Irritation
low
Source
natural
Humectant
Tenacibaculum Jejuense/Oat Bran Extract/Volcanic Ash Extract Ferment Filtrate
A fermented ingredient that may help hydrate and soothe skin, but research is still early.
Irritation
low
Source
biotech
A gentle, hydrating botanical water that may help calm irritation and support a balanced skin barrier.
Irritation
low
Source
natural
A gentle, antioxidant-rich byproduct of jojoba oil production that helps soothe and condition skin without clogging pores.
Irritation
low
Source
natural
A traditional botanical ingredient with antimicrobial and soothing properties, best for oily or blemish-prone skin, but can be irritating for sensitive types.
Irritation
moderate
Source
natural
A nutrient-rich seaweed extract that helps hydrate and calm the skin, with antioxidant benefits from coastal minerals.
Irritation
low
Source
natural
A traditional plant extract with potential soothing benefits, but limited modern research and a need for cautious formulation due to its alkaloid content.
Irritation
moderate
Source
natural
A gentle, postbiotic ingredient that supports the skin's microbiome and helps calm irritation without live bacteria.
Irritation
low
Source
biotech
A gentle, fermented ingredient that helps hydrate and support a balanced skin microbiome without irritation.
Irritation
low
Source
biotech
A gentle, microbiome-friendly ferment that hydrates and soothes without irritation.
Irritation
low
Source
biotech
A gentle, biotech-derived ferment that helps hydrate and calm the skin while supporting a healthy barrier.
Irritation
low
Source
biotech
A fermented turmeric extract that offers antioxidant protection and soothing benefits with potentially better skin absorption than plain turmeric.
Irritation
low
Source
biotech
A gentle, probiotic-derived exfoliant that helps smooth skin texture and support a healthy skin barrier without harsh acids.
Irritation
low
Source
biotech
A mild, fragrant floral water that may help calm sensitive skin, but its benefits are largely anecdotal and not backed by strong clinical evidence.
Irritation
low
Source
natural
Lavandin herb extract offers gentle soothing and a pleasant scent, but its benefits are mostly aromatic and calming rather than transformative.
Irritation
low
Source
natural
Lavender water is a gentle, aromatic hydrosol that can soothe and refresh skin, but its benefits are mostly anecdotal and it may cause irritation in sensitive individuals due to trace essential oil components.
Irritation
low
Source
natural
Lemon balm juice is a gentle, antioxidant-rich botanical that helps calm irritated skin and provides mild protection against environmental stress.
Irritation
low
Source
natural
A mild, aromatic botanical water that can help calm and refresh the skin, but its benefits are mostly anecdotal and it may cause sensitivity in rare cases.
Irritation
low
Source
natural
A lab-grown licorice extract that helps calm irritation and defend against environmental stress without the variability of field-grown plants.
Irritation
low
Source
biotech
A gentle floral water that can soothe and lightly tone the skin, but its benefits are mostly anecdotal and not backed by strong clinical evidence.
Irritation
low
Source
natural
A gentle, hydrating botanical water that can replace plain water in formulas, offering mild soothing and antioxidant benefits.
Irritation
low
Source
natural
Lotus flower water is a mild, hydrating botanical water that soothes skin and adds a subtle floral scent, but its benefits beyond basic moisture are not strongly backed by research.
Irritation
low
Source
natural
A gentle, water-like juice from the lotus plant that hydrates and provides antioxidant protection, ideal for sensitive or dehydrated skin.
Irritation
low
Source
natural
A gentle, water-based botanical blend that may offer antioxidant and soothing benefits, but research is limited.
Irritation
low
Source
natural
Antioxidant
SACCHAROMYCES/LILIUM CANDIDUM CALLUS EXTRACT FERMENT EXTRACT FILTRATE
A gentle, biotech-derived ingredient that may help calm and protect skin, though human studies are still limited.
Irritation
low
Source
biotech
Antioxidant
LACTOBACILLUS/SACCHAROMYCES/MAGNOLIA OFFICINALIS BARK FERMENT EXTRACT
A fermented magnolia bark extract that offers antioxidant and soothing benefits, with fermentation potentially boosting the bioavailability of its active compounds.
Irritation
low
Source
biotech
A gentle, plant-derived antioxidant extract that may help calm skin and protect against environmental stress, though research is still early.
Irritation
low
Source
natural
A gentle, fermented botanical blend that may help calm skin and provide antioxidant support, though research is still emerging.
Irritation
low
Source
natural
A synthetic cooling ingredient that delivers a gentle, long-lasting chill without the strong smell or sting of menthol.
Irritation
low
Source
synthetic
Soothing agent
METHYL AMINOMETHYLCYCLOHEXANE CARBOXAMIDE HCL
A synthetic soothing ingredient that helps calm reactive skin and reduce visible redness without irritation.
Irritation
low
Source
synthetic