A gentle amino acid salt that helps maintain skin hydration and supports a healthy moisture barrier without irritation.
Irritation
low
Source
semi-synthetic
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 amino acid salt that helps maintain skin hydration and supports a healthy moisture barrier without irritation.
Irritation
low
Source
semi-synthetic
A biotech humectant that helps skin hold onto moisture, with a lower molecular weight for deeper penetration than standard hyaluronic acid.
Irritation
low
Source
biotech
A gentle, stable vitamin C derivative that also delivers hyaluronic acid's moisture-binding power, ideal for brightening and hydrating without irritation.
Irritation
low
Source
semi-synthetic
A gentle, stable vitamin C derivative fused with hyaluronic acid that brightens and hydrates without the sting of pure L-ascorbic acid.
Irritation
low
Source
semi-synthetic
Asian pear fruit juice is a gentle, water-like ingredient that adds light hydration and a touch of antioxidant protection, but it's not a powerhouse active.
Irritation
low
Source
natural
Asian pear juice is a gentle, hydrating ingredient that adds a touch of natural antioxidant power to skincare, but its benefits are backed by limited direct research.
Irritation
low
Source
natural
Asparagine is a gentle, naturally occurring amino acid that helps attract and retain moisture in the skin, making it a safe hydrating ingredient for most skin types.
Irritation
low
Source
natural
Aspartic acid is a gentle, water-binding amino acid that helps keep skin hydrated and supports a balanced skin surface pH.
Irritation
low
Source
natural
A gentle, fermented ingredient that helps hydrate and condition skin without irritation, but research on its specific benefits is still emerging.
Irritation
low
Source
biotech
Skin Conditioning
ASPERGILLUS/HYDROLYZED COLLAGEN FERMENT FILTRATE
A fermented collagen ingredient that may help hydrate and support skin firmness, but research is still emerging.
Irritation
low
Source
biotech
A gentle, water-based fruit extract that provides light hydration and antioxidant benefits, but research on its specific effects is still limited.
Irritation
low
Source
natural
A gentle, biotech-derived humectant that helps hydrate and soothe the skin, with some antioxidant potential.
Irritation
low
Source
biotech
A gentle, biotech-derived yeast ferment that hydrates and soothes, ideal for sensitive and dry skin types.
Irritation
low
Source
biotech
A gentle, fermented yeast extract that helps skin hold moisture and may calm irritation.
Irritation
low
Source
biotech
Humectant
Auxenochlorella Protothecoides Lysate Filtrate
A gentle, algae-derived ingredient that helps hydrate and support the skin barrier without irritation.
Irritation
low
Source
biotech
Avocado Fruit Water is a gentle, hydrating base ingredient that provides light antioxidant benefits without the richness of avocado oil.
Irritation
low
Source
natural
A gentle, biotech-derived humectant that helps hydrate and condition the skin, with low irritation potential.
Irritation
low
Source
biotech
A gentle, fermented ingredient that helps hydrate and condition skin, but its benefits come from the fermentation process rather than the folic acid itself.
Irritation
low
Source
biotech
Bakuhan is a gentle, rice-derived humectant that helps hydrate and soothe the skin, but research on its benefits is still emerging.
Irritation
low
Source
natural
A gentle, hydrating plant juice that provides light moisture and antioxidant protection, ideal for sensitive or dehydrated skin.
Irritation
low
Source
natural
A gentle, watery sap that helps hydrate and soothe the skin, with early research suggesting antioxidant benefits.
Irritation
low
Source
natural
A gentle, plant-based humectant that helps hydrate and soothe the skin, though research on its specific benefits is still emerging.
Irritation
low
Source
natural
A gentle, plant-derived water that provides light hydration and a soothing feel, ideal for sensitive or dehydrated skin.
Irritation
low
Source
natural
A gentle, water-like ingredient that adds light hydration and a touch of antioxidants, ideal for sensitive or dehydrated skin.
Irritation
low
Source
natural
Banana Fruit Extract is a gentle, natural humectant that helps hydrate and soothe the skin, making it a nice addition to moisturizing formulas.
Irritation
low
Source
natural
Banana fruit juice is a gentle, natural hydrator that can soothe and soften skin, but its benefits are mostly anecdotal and less studied than other fruit extracts.
Irritation
low
Source
natural
Banana pulp extract is a gentle, natural humectant that helps hydrate and soothe the skin, but its benefits are mostly anecdotal with limited clinical backing.
Irritation
low
Source
natural
Banana water is a gentle, hydrating ingredient that adds a touch of soothing moisture to skincare products, but it's not a powerhouse active.
Irritation
low
Source
natural
A gentle fermented ingredient that hydrates and supports skin barrier health, ideal for sensitive or dry skin types.
Irritation
low
Source
biotech
Barley Leaf Juice is a gentle, hydrating ingredient that may help calm skin and provide antioxidant protection, but research is still limited.
Irritation
low
Source
natural
Barley Seed Water is a gentle, hydrating alternative to plain water in skincare, offering light nourishment and soothing benefits.
Irritation
low
Source
natural
Barley Stem Water is a gentle, plant-derived water alternative that provides light hydration and soothing benefits, but it lacks strong independent research.
Irritation
low
Source
natural
Beet root juice is a gentle, hydrating ingredient with antioxidant benefits, but its bright red color can stain fabrics and skin temporarily.
Irritation
low
Source
natural
A gentle, modified hyaluronic acid that hydrates and plumps skin with low irritation risk.
Irritation
low
Source
semi-synthetic
Benzyl PCA is a gentle humectant that helps attract moisture to the skin, but it's less studied than more common hydrators like glycerin or hyaluronic acid.
Irritation
low
Source
synthetic
A gentle, hydrating sugar that calms irritation and supports the skin barrier without clogging pores.
Irritation
low
Source
natural
A gentle, multi-tasking ingredient that hydrates, soothes, and helps strengthen the skin barrier and hair fibers.
Irritation
low
Source
semi-synthetic
A gentle, semi-synthetic humectant that helps hydrate and calm the skin, with improved stability over plain beta-glucan.
Irritation
low
Source
semi-synthetic
Betaine is a gentle, naturally sourced humectant that helps hydrate and soothe the skin without irritation, making it ideal for sensitive skin.
Irritation
low
Source
natural
A gentle, hydrating sap from Korean birch trees that helps soothe and refresh the skin without clogging pores.
Irritation
low
Source
natural
A gentle, fermented ingredient that helps strengthen the skin barrier and improve moisture retention, popular in K-beauty and probiotic skincare.
Irritation
low
Source
biotech
A gentle, biotech-derived sugar that hydrates and calms skin without stickiness, ideal for sensitive or dehydrated skin.
Irritation
low
Source
biotech
A gentle, sugar-based humectant that hydrates and soothes without clogging pores, ideal for sensitive or dehydrated skin.
Irritation
low
Source
biotech
A gentle, biotech-derived humectant that hydrates and soothes skin while supporting a healthy barrier.
Irritation
low
Source
biotech
A gentle, fermented sugar derivative that hydrates and calms skin without clogging pores—great for sensitive and dry types.
Irritation
low
Source
biotech
A gentle, sugar-based humectant that hydrates and calms skin without clogging pores.
Irritation
low
Source
biotech
Birch bark water is a gentle, hydrating botanical water that provides antioxidants and a soothing feel, ideal for sensitive or dry skin types.
Irritation
low
Source
natural
Birch leaf water is a gentle, hydrating botanical water that can soothe and refresh the skin, but its benefits are mild compared to more concentrated extracts.
Irritation
low
Source
natural
Birch sap is a gentle, hydrating water-like ingredient that provides light moisture and soothing benefits, but it's not a powerhouse active.
Irritation
low
Source
natural
A gentle synthetic humectant that helps skin retain moisture and improves the texture of skincare formulas.
Irritation
low
Source
synthetic
A gentle silicone humectant that hydrates and smooths skin without clogging pores, ideal for sensitive and oily skin types.
Irritation
low
Source
semi-synthetic
A gentle, water-like ingredient that adds light hydration and antioxidant protection, ideal for sensitive or dehydrated skin.
Irritation
low
Source
natural
Black Cherry Juice is a gentle, hydrating ingredient that also provides antioxidant benefits, making it a nice addition to soothing and moisturizing formulas.
Irritation
low
Source
natural
Black Strap Powder is a natural sugar cane derivative that hydrates and gently exfoliates, but its high sugar content may not suit all skin types.
Irritation
low
Source
natural
A gentle seaweed extract that hydrates and soothes skin, but its benefits are mostly anecdotal and backed by limited clinical research.
Irritation
low
Source
natural
A gentle, hydrating ingredient from fermented algae that may help soothe and moisturize the skin.
Irritation
low
Source
natural
A gentle, hydrating fruit juice with antioxidant potential, but research on its skincare benefits is still limited.
Irritation
low
Source
natural
A gentle, hydrating seaweed powder that helps skin retain moisture and may soothe irritation.
Irritation
low
Source
natural
A mineral-rich seaweed extract that hydrates and soothes skin, generally safe for most skin types.
Irritation
low
Source
natural
Butyl Laevulinate is a gentle, plant-derived ester that hydrates and lightly exfoliates, making it a good option for sensitive skin.
Irritation
low
Source
semi-synthetic