Ingredient dictionary

Hexamethylindanopyran

Also listed as: Galaxolide, HHCB

A synthetic musk used as a fragrance ingredient, its main job is to give products a soft, clean, musky scent. It is on the label of 18 products in our library. Checked against our library November 6, 2026.

The catch: none for most people; check the full product list if your skin reacts easily.

What Hexamethylindanopyran does

Adds a soft, clean, musky scent
Blends with floral and woody notes
Helps fragrance linger on hair after rinsing

Hexamethylindanopyran is a synthetic musk. It is made in a chemical lab, not taken from plants or animals. Musk scents were once sourced from animals, so chemists created man-made versions that smell similar and are easier to produce consistently.

Formulators use it to add a soft, clean, musky note that rounds out floral and woody scents. It stays stable in shampoo and hair color bases and helps the scent linger on hair after rinsing. It blends easily with other fragrance notes, so it works well in a finished scent.

Good for

People who like a soft, clean, musky scent in their shampoo or hair color products.

Be careful if

Nothing in particular for most skin types.

Frequently asked questions

Is Hexamethylindanopyran the same as Galaxolide?

Yes. Galaxolide and HHCB are common names for the same synthetic musk. Some labels hide it under the general term fragrance or parfum, so check the full ingredient list if you want to know.

Is Hexamethylindanopyran natural?

No. It is made by chemical synthesis rather than taken from plants or animals. Its scent is designed to resemble natural musk, which was traditionally sourced from animals.