Ingredient dictionary

Benzophenone-1

Also listed as: 2,4-Dihydroxybenzophenone

Benzophenone-1 is a UV-absorbing ingredient that soaks up ultraviolet light, helping protect a product's formula and, in some products, the skin. It is on the label of 9 products in our library. Checked against our library November 6, 2026.

The catch: lab studies have raised questions about possible hormone-like effects, and it is not approved as a sunscreen filter in every region.

What Benzophenone-1 does

Absorbs ultraviolet light
Helps protect formulas from light damage
Used as a UV filter in some products

Benzophenone-1 belongs to the benzophenone family, a group of man-made compounds that absorb ultraviolet light. Its chemical name is 2,4-dihydroxybenzophenone. It is made through chemical synthesis rather than taken from plants or minerals.

Formulators use it because it absorbs UV light before that light can break down colors, scents, or active ingredients in a product. It dissolves into oil-based and alcohol-based formulas, so it does not leave the white look that mineral filters can. It works mostly behind the scenes, though some products also use it as a UV filter.

Good for

Suits formulas that need help guarding light-sensitive colors, scents or actives from sunlight.

Frequently asked questions

Is Benzophenone-1 safe in skincare?

Lab studies have raised questions about possible hormone-like effects, and rules differ between regions. Buyers who want to avoid it can check the ingredient list before buying. Talk with a dermatologist if you have concerns about a specific product.

Is Benzophenone-1 a sunscreen ingredient?

It can absorb UV light, so it can add some light protection, but it is not used as a main sunscreen filter in every region. Many sunscreens use other UV filters instead. Read the label and sun protection claims before relying on it.