Know what's inside your supplements & skincare
20 ingredients explained: where they come from, what they do, the side effects, and the science behind the most popular products on US shelves.
Trending ingredients
What people are searching for right now, updated monthly
Last updated 2026-09-25
- 1Coenzyme Q10246,000 searches/mo+0.1
- 2Retinol135,000 searches/mo-7.1
- 3Zinc165,000 searches/mo-14.7
- 4Vitamin C165,000 searches/mo-18.9
- 5Turmeric / Curcumin301,000 searches/mo-3
- 6Vitamin D3135,000 searches/mo-3.5
- 7Hyaluronic Acid201,000 searches/mo-4.7
- 8Iron165,000 searches/mo-7.7
- 9Creatine673,000 searches/mo-10.1
- 10Omega-3 Fatty Acids201,000 searches/mo-12.1
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From vitamins and minerals to skin actives and botanicals
Vitamins
Essential micronutrients your body needs to function
2 ingredientsMinerals
Elements involved in hundreds of body processes
3 ingredientsAmino Acids & Proteins
The building blocks of muscle, skin, and enzymes
2 ingredientsBotanicals & Herbs
Plant-derived ingredients used in supplements and skincare
2 ingredientsAntioxidants
Compounds that help protect cells from oxidative stress
1 ingredientsLipids & Fatty Acids
Fats and oils that build cells and carry nutrients
2 ingredientsProbiotics & Digestive
Live microorganisms and ingredients for gut health
1 ingredientsSkin Actives
Ingredient superstars that change how skin behaves
5 ingredientsHumectants & Emollients
Ingredients that attract and hold moisture
2 ingredientsStart exploring
The most-searched ingredients in American households
Niacinamide
A form of vitamin B3 that repairs the skin barrier, brightens tone, and calms breakouts — the most versatile skincare active.
MineralsMagnesium
An essential mineral involved in more than 300 enzyme reactions, widely supplemented for sleep, muscle, and nerve function.
VitaminsVitamin D3
A fat-soluble vitamin made in skin from sunlight, widely supplemented for bone, muscle, and immune health.
Skin ActivesRetinol
The gold-standard anti-aging and anti-acne active; the OTC member of the retinoid family backed by decades of research.
Humectants & EmollientsHyaluronic Acid
A skin-identical humectant that binds up to 1,000 times its weight in water — the hydration backbone of modern skincare.
Amino Acids & ProteinsCreatine
A compound made from amino acids that fuels short bursts of muscle power and is the most studied sports supplement in the world.
Lipids & Fatty AcidsOmega-3 Fatty Acids
Essential fats from fish and algae (EPA and DHA) that support heart, brain, and eye health.
VitaminsVitamin C
An essential water-soluble vitamin and antioxidant, used orally for immunity and topically for brightening and collagen support.
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