Decanal is a natural fragrance ingredient that adds a fresh citrus scent to products, but it can be a skin sensitizer for some people.
Irritation
moderate
Source
natural
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
Decanal is a natural fragrance ingredient that adds a fresh citrus scent to products, but it can be a skin sensitizer for some people.
Irritation
moderate
Source
natural
A synthetic fragrance ingredient that adds a fresh scent but offers no skincare benefits and may cause sensitivity in some people.
Irritation
low
Source
synthetic
Decanenitrile is a synthetic fragrance ingredient that adds a fresh, citrusy note, but it offers no skincare benefits and may cause sensitivity in some individuals.
Irritation
low
Source
synthetic
Delta-Decalactone is a pleasant-smelling fragrance ingredient with a low irritation profile, but it offers no direct skincare benefits beyond scent.
Irritation
low
Source
natural
A synthetic scent ingredient that adds a creamy, fruity note to products; generally safe at low levels but may cause sensitivity in some individuals.
Irritation
low
Source
synthetic
A synthetic scent molecule that adds a sweet, creamy note to products; generally safe but offers no skincare benefit.
Irritation
low
Source
synthetic
Delta-Nonalactone is a synthetic fragrance ingredient that adds a creamy, coconut-like scent to products; it is generally considered safe at low concentrations but offers no skincare benefits.
Irritation
low
Source
synthetic
Delta-Octalactone is a synthetic fragrance ingredient that adds a creamy, coconut-like scent to products; it is generally safe at low concentrations but may cause irritation in sensitive individuals.
Irritation
low
Source
synthetic
A synthetic scent ingredient that adds a creamy, coconut-like aroma; generally considered safe at low levels but may cause sensitivity in some individuals.
Irritation
low
Source
synthetic
A natural aromatic oil that adds a woody scent to products, but may cause irritation in sensitive skin if used undiluted.
Irritation
moderate
Source
natural
Diacetyl adds a buttery scent to cosmetics but is controversial due to respiratory risks from inhalation, especially in aerosolized products.
Irritation
moderate
Source
synthetic
Dibenzyl Ether is a synthetic fragrance ingredient that adds a light floral note, but it offers no skincare benefits and may cause sensitivity in those with fragrance allergies.
Irritation
low
Source
synthetic
Dibutyl Sulfide is a synthetic fragrance ingredient with a strong, unpleasant odor at high concentrations, used in tiny amounts to add complexity to scents.
Irritation
moderate
Source
synthetic
A synthetic scent ingredient that adds a sweet, creamy note to products; generally considered safe at low concentrations but offers no skincare benefit.
Irritation
low
Source
synthetic
Didehydromenthane is a synthetic minty fragrance that can make products smell fresh, but it may cause irritation for sensitive skin.
Irritation
moderate
Source
synthetic
Didehydropinane is a synthetic pine-scented fragrance ingredient that adds a fresh aroma but offers no skincare benefits and may irritate sensitive skin.
Irritation
moderate
Source
synthetic
A synthetic fragrance ingredient with limited safety data; generally considered low risk at typical use levels but may cause sensitivity in some individuals.
Irritation
low
Source
synthetic
Diethyl Malonate is a synthetic fragrance ingredient that adds a fruity, apple-like scent to products; it is generally considered safe at low concentrations but offers no skincare benefits.
Irritation
low
Source
synthetic
Diethyl Phthalate is a synthetic plasticizer with a controversial safety profile; many brands have voluntarily phased it out due to consumer concerns, though regulatory bodies generally consider it safe at low levels.
Irritation
low
Source
synthetic
A synthetic scent ingredient that adds fragrance but offers no skincare benefits; generally safe at low levels but may cause sensitivity in some people.
Irritation
low
Source
synthetic
Diethylheptadienal is a synthetic fragrance ingredient that adds a fresh scent but may cause irritation in sensitive individuals.
Irritation
moderate
Source
synthetic
A synthetic fragrance ingredient that adds scent but offers no skin benefit; safe at low levels but may cause sensitivity in some people.
Irritation
low
Source
synthetic
A synthetic fragrance compound that adds a nutty, roasted note to products; generally safe at low levels but offers no skincare benefit.
Irritation
low
Source
synthetic
Diethylquinoline is a synthetic fragrance compound with limited safety data; it may cause skin irritation in sensitive individuals.
Irritation
moderate
Source
synthetic
A synthetic fragrance ingredient that adds a warm, woody scent but offers no skincare benefits.
Irritation
low
Source
synthetic
A synthetic scent ingredient that adds a pleasant floral-musky note, but offers no skincare benefits and may cause sensitivity in some individuals.
Irritation
low
Source
synthetic
A synthetic fragrance ingredient that adds a sweet, creamy scent but offers no skincare benefits and may be a concern for those with fragrance sensitivities.
Irritation
low
Source
synthetic
A synthetic scent ingredient that adds a pleasant floral-woody note but offers no skincare benefit and may be a concern for those with fragrance sensitivities.
Irritation
low
Source
synthetic
A synthetic pine-scented fragrance ingredient that adds a fresh note but may cause irritation in sensitive individuals.
Irritation
moderate
Source
synthetic
Dihydroanethole is a synthetic scent ingredient that adds a sweet, licorice-like note but offers no skin benefit and may cause sensitivity in some individuals.
Irritation
low
Source
synthetic
Dihydrocarveol adds a minty, herbal scent to products but may cause irritation in sensitive individuals at higher concentrations.
Irritation
moderate
Source
natural
Dihydrocarvone is a natural fragrance compound that adds a minty scent to products but offers no direct skincare benefits.
Irritation
low
Source
natural
A synthetic scent ingredient that makes products smell pleasant but offers no skincare benefit and may trigger sensitivity in some people.
Irritation
low
Source
synthetic
A synthetic fragrance ester that adds a pleasant scent but offers no skincare benefits; safe at low concentrations for most people.
Irritation
low
Source
synthetic
A synthetic scent ingredient that adds a pleasant floral note but offers no skincare benefits and may cause sensitivity in some people.
Irritation
low
Source
synthetic
Dihydrofarnesol is a gentle, naturally derived fragrance ingredient that also offers mild skin-conditioning benefits, making it a safer alternative to synthetic perfumes.
Irritation
low
Source
natural
A synthetic fragrance ingredient that adds a long-lasting scent to products; generally considered safe at low concentrations but may cause sensitivity in some individuals.
Irritation
low
Source
synthetic
A synthetic scent ingredient that adds a pleasant aroma but offers no skincare benefits; safe at low levels but may cause sensitivity in some.
Irritation
low
Source
synthetic
Dihydrogeranyl Tiglate is a synthetic fragrance ingredient that adds a pleasant scent to products; it is generally considered safe at low concentrations but may cause sensitivity in some individuals.
Irritation
low
Source
synthetic
A synthetic fragrance ingredient that adds a fresh, green scent; generally safe at low levels but may cause irritation in sensitive individuals.
Irritation
low
Source
synthetic
Dihydrojasmone is a synthetic jasmine-like fragrance that adds a pleasant scent to products but offers no skincare benefits and may be a concern for those with fragrance sensitivities.
Irritation
low
Source
synthetic
A synthetic scent ingredient that adds a pleasant floral note but may cause irritation in sensitive individuals.
Irritation
moderate
Source
synthetic
Dihydromyrcene is a synthetic scent ingredient that adds a fresh, citrus-like aroma but offers no skincare benefits.
Irritation
low
Source
synthetic
A common synthetic fragrance that adds a pleasant scent but may cause irritation in sensitive individuals.
Irritation
moderate
Source
synthetic
Dihydropseudoionone is a synthetic scent ingredient that adds a pleasant floral note, but it offers no skincare benefits and may cause sensitivity in those allergic to fragrance.
Irritation
low
Source
synthetic
Dihydroterpinyl Acetate is a synthetic scent ingredient that gives a fresh, woodsy aroma but may cause irritation in sensitive skin.
Irritation
moderate
Source
synthetic
A synthetic solvent used mainly in fragrances; not a primary skincare active and may cause irritation at higher levels.
Irritation
moderate
Source
synthetic
Diisopropyl Benzaldehyde is a synthetic fragrance ingredient with limited safety data; it may cause skin irritation in sensitive individuals.
Irritation
moderate
Source
synthetic
Dill Herb Oil adds a fresh herbal scent and mild antimicrobial benefits, but can be irritating for sensitive skin.
Irritation
moderate
Source
natural
Dill Seed Oil adds a fresh, herbal scent to skincare products and may offer mild antioxidant benefits, but it can be irritating for sensitive skin and is mainly used for fragrance.
Irritation
moderate
Source
natural
A mild synthetic fragrance ingredient that also helps preserve formulas, generally considered safe at low concentrations.
Irritation
low
Source
synthetic
A synthetic fragrance ingredient that adds a pleasant floral scent but offers no skincare benefits and may cause sensitivity in some individuals.
Irritation
low
Source
synthetic
A synthetic fragrance component that provides a pleasant scent but may cause irritation in sensitive individuals.
Irritation
moderate
Source
synthetic
A synthetic scent ingredient that adds a fresh, citrus note but may cause irritation in sensitive individuals.
Irritation
moderate
Source
synthetic
A synthetic fragrance ingredient with limited safety data; best for those who tolerate synthetic scents.
Irritation
moderate
Source
synthetic
A synthetic scent ingredient that adds a fresh, citrus note but may cause irritation in sensitive individuals.
Irritation
moderate
Source
synthetic
A synthetic scent ingredient that adds a fresh, green note to products; generally safe at low levels but may cause sensitivity in some.
Irritation
low
Source
synthetic
Fragrance Ingredient
Dimethyl Hexahydronaphthyl Dihydroxymethyl Acetal
A synthetic scent ingredient that gives a warm, woody aroma but offers no skincare benefit and may be unnecessary for sensitive skin.
Irritation
low
Source
synthetic
A synthetic fragrance compound that adds scent but offers no skincare benefits; safe at low levels but may irritate sensitive skin.
Irritation
low
Source
synthetic
A synthetic scent ingredient that adds a fresh note but may cause irritation for sensitive skin.
Irritation
moderate
Source
synthetic