Start with what you want your routine to do.

Niacinamide is a form of vitamin B3 used on skin. Controlled tests of set formulas found gains in skin barrier signs, uneven tone, oil output, and skin look. Results depend on the amount used and the cream or gel base.

Lactic Acid is an AHA that loosens dead surface cells and adjusts product pH. Lactate is also part of the skin's natural moisture mix. Peeling strength and comfort depend on the amount, pH, product base, and how it is used.

Ascorbic Acid is vitamin C. It helps slow harm from air and can support skin's collagen and pigment paths. Visible results depend on the amount, pH, shelf life, base, and whole product. An unstable formula may not give the same effect.

Caffeine is used to condition skin and is often found in eye products. Small tests of mixed formulas show uneven, short-term changes in puffiness, dark color, or appearance. They do not prove that Caffeine removes true eye bags or caused the result by itself.

Niacinamide is a form of vitamin B3 used on skin. Controlled tests of set formulas found gains in skin barrier signs, uneven tone, oil output, and skin look. Results depend on the amount used and the cream or gel base.

Salicylic Acid loosens dead surface cells and can be an acne drug. Under US over-the-counter rules, compliant acne drugs may contain 0.5% to 2%. Its use in a cosmetic does not give that product an acne-treatment claim.

Retinol is a form of vitamin A used on skin. Skin can turn it into retinaldehyde and then retinoic acid. Controlled tests of set formulas found fewer fine lines and some changes in deeper support tissue. Results still depend on strength, base, and product care.

Retinal is a vitamin A form used to condition skin. Skin can change it to retinoic acid. Good tests of set Retinal products found smoother sun-aged skin with less sting than retinoic acid put on skin.

Niacinamide is a form of vitamin B3 used on skin. Controlled tests of set formulas found gains in skin barrier signs, uneven tone, oil output, and skin look. Results depend on the amount used and the cream or gel base.

Ascorbic Acid is vitamin C. It helps slow harm from air and can support skin's collagen and pigment paths. Visible results depend on the amount, pH, shelf life, base, and whole product. An unstable formula may not give the same effect.

Retinol is a form of vitamin A used on skin. Skin can turn it into retinaldehyde and then retinoic acid. Controlled tests of set formulas found fewer fine lines and some changes in deeper support tissue. Results still depend on strength, base, and product care.

Glycolic Acid is an AHA that loosens dead surface cells and adjusts product pH. Its strength and risk of irritation depend on the amount, pH, product base, contact time, and how often it is used.

Sodium Hyaluronate is the sodium salt of Hyaluronic Acid. It draws in water and conditions skin. It holds water in a product and on the skin surface. This can briefly make skin look more moist and full. Results depend on its size, amount, base, and the full formula.

Pro-Vitamin B5 is also called panthenol. It binds water and conditions skin and hair. Skin changes it to vitamin B5. Studies of set forms support more skin water, a calm feel, and barrier repair.

Ceramide NP is a fat like those in the outer skin barrier. It helps condition skin. Human tests support some creams with ceramide blends, but they do not show what Ceramide NP does by itself.

Hyaluronic Acid is a large sugar molecule found naturally in skin. In skincare it attracts water and forms a light film on the surface. This supports temporary hydration and a plumper look. It does not work like an injected dermal filler.

Pro-Vitamin B5 is also called panthenol. It binds water and conditions skin and hair. Skin changes it to vitamin B5. Studies of set forms support more skin water, a calm feel, and barrier repair.

Niacinamide is a form of vitamin B3 used on skin. Controlled tests of set formulas found gains in skin barrier signs, uneven tone, oil output, and skin look. Results depend on the amount used and the cream or gel base.

Allantoin conditions skin in cosmetics. In the United States, a legal OTC drug may use 0.5% to 2% as a skin protectant. That drug status does not always apply to a normal cosmetic.

Ceramide NP is a fat like those in the outer skin barrier. It helps condition skin. Human tests support some creams with ceramide blends, but they do not show what Ceramide NP does by itself.

Lactic Acid is an AHA that loosens dead surface cells and adjusts product pH. Lactate is also part of the skin's natural moisture mix. Peeling strength and comfort depend on the amount, pH, product base, and how it is used.

Glycolic Acid is an AHA that loosens dead surface cells and adjusts product pH. Its strength and risk of irritation depend on the amount, pH, product base, contact time, and how often it is used.

Urea is part of the skin's natural moisturizing factor. At lower concentrations, it draws in and holds water. At higher concentrations, it also loosens and sheds thick, rough surface skin.

Mandelic Acid is an alpha-hydroxy acid (AHA) used to remove dead surface cells. Small studies of Mandelic Acid peels or mixed formulas suggest benefits for acne and uneven skin tone. Results depend on strength, pH, formula, and use. It can still irritate skin.

Pro-Vitamin B5 is also called panthenol. It binds water and conditions skin and hair. Skin changes it to vitamin B5. Studies of set forms support more skin water, a calm feel, and barrier repair.

Argania Spinosa Kernel Oil is a fatty oil pressed from argan kernels. Its proven cosmetic roles are softening and conditioning skin. It also conditions hair.

Hydrolyzed Wheat Protein is plant protein broken into small pieces. It coats hair with a light film, which can make hair feel stronger, thicker, and smoother. The effect is temporary.

Snail Secretion Filtrate is a filtered mix taken from snail slime. It is animal-derived and is used to soften skin and help it hold water. Small studies found gains with a few set formulas. They do not prove that every snail product will hydrate, smooth, or reduce signs of sun damage.

Titanium Dioxide is a mineral UV filter and white color. In a tested sunscreen, it can guard against UVB and some UVA rays. Other grades make a product white or less clear. Sun care depends on the full formula and final tests.

Zinc Oxide is a mineral UV filter and skin guard. In a tested sunscreen, it can help block both UVA and UVB rays. In barrier creams, it forms a coat on the skin. Sun care depends on the full product and its tests.