Cover gray hair at home with a herbal hair dye cream from Kim So-hyung, a Korean herbal-medicine doctor. Pump out both parts together, work it in like a shampoo and rinse. Dark Brown gives a deep, blackish-brown color.

Why you'll love it

• 41 herbal extracts: 18 black herbal extracts and 23 nourishing herbal extracts, including black bean, black sesame and ginseng.
• Quick and easy: both parts come out of the pump at the same time, so there is nothing to mix. Use as much as you need, from a full head to a touch-up.
• Cream that turns to foam: it spreads evenly as a cream, then thickens into a dense foam when water is added.
• Your choice of depth: leave it on for 10 minutes for a natural shade, or 30 minutes for a deeper color.
• Vegan certified, and the brand reports that it is free from 17 substances of concern and has passed a skin irritation test.

How to use

1. Check that both parts come out of the pump together the first time.
2. On dry hair, apply the cream with a comb or your hands. Work it through.
3. Add a little water and lather until it foams well. Leave for 10 minutes (natural) or 30 minutes (deeper).
4. Wet your hands and lather again, then rinse with lukewarm or cool water.
5. Close the cap and store in a cool place. You can reuse it until its use-by date.

Hair-dye warning: hair dyes can cause allergic reactions. Do a patch test 48 hours before every use. Do not use on a scalp that is irritated or injured, or on eyebrows or eyelashes. Rinse right away if it gets in your eyes. Do not use on children.

Product details: 200 ml · shade Dark Brown · a functional hair-dye cosmetic reviewed by Korea's Ministry of Food and Drug Safety · seller Hemille Life Lab, Seoul.