Hair Colorants-6-Hydroxybenzomorpholine (3,4-Dihydro-2H-1,4-benzoxazin-6-ol) CAS No.: 26021-57-8

6-Hydroxybenzomorpholine, also known as 3,4-Dihydro-2H-1,4-benzoxazin-6-ol, is an important intermediate used in oxidative hair dye formulations. With its unique benzomorpholine structure, this compound provides excellent color development, high stability, and good compatibility with various dye precursors.

It is widely used in permanent and semi-permanent hair color formulations as a coupling component or secondary dye intermediate, typically combined with primary intermediates such as p-Phenylenediamine (PPD), Resorcinol, or m-Aminophenol to achieve a wide range of natural brown and warm chestnut shades.

6-Hydroxybenzomorpholine produces smooth and natural tones, especially in natural brown to dark brown color ranges, when combined with common oxidative dye bases.

The compound’s heterocyclic benzoxazine structure ensures superior light and wash fastness, resulting in long-lasting color retention.

Compared with traditional dye intermediates, it offers lower irritation and sensitization potential, making it suitable for formulations that comply with EU, US, and Asian cosmetic regulations.

It disperses well in standard hair dye systems such as creams, gels, and liquid formulations, maintaining excellent stability with other components.

6-Hydroxybenzomorpholine + p-Phenylenediamine + Resorcinol → Natural brown / Warm chestnut / Deep coffee shades

25 kg fiber drum or customized packaging upon request

Store in a cool, dry, and well-ventilated area away from light

24 months under proper storage conditions

Hangzhou Ruitai Biotechnology Co.,Ltd is the professional manufacturer of Hair Colorants. With consistent product quality, high purity, and reliable technical support, we supply 6-Hydroxybenzomorpholine to global cosmetic raw material manufacturers and hair dye formulators.

Our commitment is to help you develop safe, stable, and long-lasting hair color products that meet international standards.