Hydrolyzed fibroin is a gentle silk protein that helps attract moisture to skin and hair, leaving them feeling soft and smooth without heavy residue.
Irritation
low
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
Hydrolyzed fibroin is a gentle silk protein that helps attract moisture to skin and hair, leaving them feeling soft and smooth without heavy residue.
Irritation
low
Source
natural
A moisturizing protein from fish cartilage that helps hydrate and support skin barrier function, but evidence is limited and it may not suit vegans or those with fish allergies.
Irritation
low
Source
natural
A gentle, protein-rich ingredient from fish egg membranes that helps hydrate and condition skin, but research is still limited.
Irritation
low
Source
natural
A gentle, marine-sourced humectant that may help hydrate and temporarily smooth the skin, but research is limited and it's not a standout compared to well-studied alternatives.
Irritation
low
Source
natural
A novel marine-derived protein that may help smooth and hydrate skin, but research is limited and it's not a must-have ingredient.
Irritation
low
Source
natural
A gentle, antioxidant-rich root extract that may help calm skin and support a more even tone, though human studies are limited.
Irritation
low
Source
natural
A gentle plant extract with antioxidant potential, but research on its cosmetic benefits is still limited.
Irritation
low
Source
natural
A gentle, seaweed-derived humectant that attracts moisture to the skin and may help calm irritation.
Irritation
low
Source
natural
A gentle seaweed-derived film-former that helps skin feel smooth and hydrated without clogging pores.
Irritation
low
Source
natural
A fish-derived protein that temporarily strengthens hair and lightly hydrates skin, best for those seeking natural, protein-rich formulas.
Irritation
low
Source
natural
A gentle, antioxidant-rich botanical extract that helps calm skin and fight environmental stress, ideal for sensitive or aging skin.
Irritation
low
Source
natural
A gentle, lab-grown ginseng ingredient that may help calm and protect skin, but research is still early.
Irritation
low
Source
biotech
A gentle, antioxidant-rich ingredient from ginseng stem cells that may help calm and protect skin, though research is still emerging.
Irritation
low
Source
biotech
A gentle, antioxidant-rich ingredient that may help calm irritation and support a healthy-looking complexion.
Irritation
low
Source
natural
A gentle, antioxidant-rich ingredient that may help protect skin from environmental stress and support a more even tone.
Irritation
low
Source
natural
A gentle plant extract with antioxidant potential, but research on its specific benefits for skin is still limited.
Irritation
low
Source
natural
A mild, sugar-modified stevia derivative that helps hydrate skin without the sweetness or stickiness of raw stevia.
Irritation
low
Source
semi-synthetic
A powerful humectant that draws moisture into the skin and helps maintain its structural support, making it a great choice for dry or aging skin.
Irritation
low
Source
natural
A gentle, licorice-derived ingredient that helps calm redness and even out skin tone without irritation.
Irritation
low
Source
semi-synthetic
A nourishing, protein-packed ingredient that hydrates and soothes without clogging pores.
Irritation
low
Source
natural
Hydrolyzed Goji Berry is a gentle antioxidant-rich ingredient that helps protect skin from environmental stress while providing light hydration.
Irritation
low
Source
natural
A gentle antioxidant extract from goji berries that may help protect skin from environmental stress, but research on its topical benefits is still emerging.
Irritation
low
Source
natural
A gentle, plant-derived humectant that helps hydrate and soften skin without clogging pores.
Irritation
low
Source
natural
A gentle, hydrating algae extract that helps skin retain moisture and may calm irritation.
Irritation
low
Source
natural
A gentle, antioxidant-rich ingredient from grape cells that may help protect skin from environmental stress and support a more even tone.
Irritation
low
Source
biotech
A gentle, hydrating algae extract that helps skin retain moisture and may offer mild antioxidant benefits.
Irritation
low
Source
natural
Antioxidant
HYDROLYZED CAMELLIA SINENSIS LEAF/PHYLLOSTACHYS BAMBUSOIDES LEAF/STEM/PANAX GINSENG ROOT
A gentle, antioxidant-rich botanical blend that helps calm and protect skin, but its effectiveness depends on the hydrolysis process used.
Irritation
low
Source
natural
A gentle, antioxidant-rich ingredient that helps protect skin from environmental stress and soothes irritation.
Irritation
low
Source
natural
A gentle, antioxidant-rich derivative of green tea that helps protect skin from environmental stress and soothe irritation.
Irritation
low
Source
natural
A gentle, antioxidant-rich extract from green tea seeds that helps protect skin from environmental stress while soothing irritation.
Irritation
low
Source
natural
A gentle, hydrating seaweed extract that helps skin retain moisture and feel soothed, though research is still emerging.
Irritation
low
Source
natural
A gentle, antioxidant-rich leaf extract that may help calm skin and fight free radical damage, though human studies are limited.
Irritation
low
Source
natural
A gentle, plant-based protein that can temporarily strengthen hair and lightly moisturize skin without clogging pores.
Irritation
low
Source
natural
A gentle, water-soluble hemp derivative that hydrates and soothes skin without the oiliness of hemp seed oil.
Irritation
low
Source
natural
A gentle, plant-derived protein that can help strengthen hair and temporarily smooth the skin's surface without irritation.
Irritation
low
Source
natural
Hydrolyzed honey is a gentle, water-soluble humectant that helps attract moisture to the skin and may offer mild soothing benefits, making it a good option for dry or sensitive skin.
Irritation
low
Source
natural
Hydrolyzed honey protein is a gentle, natural humectant that hydrates and strengthens skin and hair without clogging pores.
Irritation
low
Source
natural
A novel, protein-rich ingredient that may help hydrate and soothe skin, but human research is very limited.
Irritation
low
Source
natural
An unusual emollient that may help soften and condition skin, but research is very limited and it may not suit acne-prone skin.
Irritation
low
Source
natural
A protein-rich extract that may help hydrate and support skin repair, but human studies are limited and ethical sourcing is a concern.
Irritation
low
Source
natural
Skin Conditioning Agent
HYDROLYZED HORSE PLACENTA/UMBILICAL EXTRACT
A protein-rich animal-derived extract that may help hydrate and condition skin, but lacks strong independent research and raises ethical considerations.
Irritation
low
Source
natural
Humectant
Fluorescent Brightener 264, Hydrolyzed Hyaluronate
Hydrolyzed hyaluronate provides light hydration, but the fluorescent brightener is an optical additive with no proven skincare benefit and may cause skin sensitivity in some people.
Irritation
low
Source
semi-synthetic
Emulsifier
Hydrolyzed Hydroxypropyl Starch Octenylsuccinate
A gentle, plant-derived emulsifier that helps blend oil and water in formulas without the irritation of some synthetic alternatives.
Irritation
low
Source
semi-synthetic
A gentle, hydrating seaweed extract that supports moisture retention and soothes the skin without clogging pores.
Irritation
low
Source
natural
A gentle, antioxidant-rich fruit extract that may help protect skin from environmental stress, though research on its cosmetic benefits is still emerging.
Irritation
low
Source
natural
A marine extract that may help hydrate and calm the skin, but research is still early and sustainability concerns exist.
Irritation
low
Source
natural
A gentle, plant-derived extract that may help calm irritation and support skin hydration, though research is still emerging.
Irritation
low
Source
natural
A gentle, plant-derived humectant that helps soothe and hydrate the skin, with some antioxidant potential.
Irritation
low
Source
natural
A lightweight, non-greasy moisturizer derived from jojoba oil that hydrates and softens skin and hair with minimal irritation risk.
Irritation
low
Source
natural
A gentle, plant-derived protein that helps strengthen hair and lightly moisturize skin without irritation.
Irritation
low
Source
natural
A gentle, water-soluble jojoba derivative that hydrates and conditions skin without the oiliness of traditional jojoba oil.
Irritation
low
Source
natural
Hair Conditioning Agent
HYDROLYZED KERATIN PG-PROPYL METHYLSILANEDIOL
A protein-silicone hybrid that temporarily repairs hair damage and adds shine without heavy buildup.
Irritation
low
Source
semi-synthetic
Hair conditioning agent
HYDROLYZED KERATIN PG-PROPYL SILANETRIOL
A protein-silicone hybrid that helps strengthen and smooth hair, but may build up over time with heavy use.
Irritation
low
Source
semi-synthetic
Hair conditioning agent
HYDROLYZED KERATIN PG-PROPYLMETHYLSILANEDIOL
A protein-silicone hybrid that helps strengthen and smooth hair without heavy buildup.
Irritation
low
Source
semi-synthetic
A gentle, fermented yeast extract that may help calm and condition the skin, though research is still limited.
Irritation
low
Source
biotech
A gentle, plant-derived humectant that hydrates and leaves a smooth, non-greasy film on skin—great for sensitive or dry types.
Irritation
low
Source
natural
A gentle, skin-identical ingredient that helps restore moisture and strengthen the skin barrier without clogging pores.
Irritation
low
Source
semi-synthetic
A gentle, plant-derived ingredient that may help calm skin and provide antioxidant support, though research is still emerging.
Irritation
low
Source
natural
A gentle, plant-derived humectant that helps hydrate and soothe the skin, though research is still emerging.
Irritation
low
Source
natural
Hydrolyzed lingonberry fruit is a gentle antioxidant and mild exfoliant that helps brighten and protect the skin without harshness.
Irritation
low
Source
natural