How? By penetrating deep into the scalp and working to heal your hair at the source. This product doesn’t focus on fixing your strands, but rather healing the damage done at the root to bring life to current growth, and stimulate new growth.

To use this shampoo, simply wet your hair, apply the Hira darkening shampoo bar directly to your wet hair, and massage gently on your scalp for 2-3 minutes. Then, wash away the foam with warm water. With continuous use for 2 months, this shampoo can keep the hair follicles firmly in place, reverse gray hair, and transform your gray hair into a youthful, vivid, and dark color. If you’ve looked into natural hair dyes in the past, you may have seen people recommending henna hair dye.The bars in this set are concentrated, so they last longer and are more cost-effective than shampoo bottles. They are suitable for all hair types and provide a new look and feel of soft, shiny, sensational hair. The essential oils like lavender and Roman chamomile nourish and cleanse the hair, helping to eliminate or reduce dandruff and restore dull hair strands. Natural ingredients heal split ends, and there are no harmful or animal-laden additives. One of the main reasons people opt for hair-darkening shampoos over permanent dyes is that the former tend to use hair- and scalp-friendly ingredients. The name itself is self-explanatory: hair-darkening shampoos help your hair achieve a darker color. This happens because of ingredients that stain or deposit a darker color on light or graying hair. That’s because hair-darkening shampoos typically contain natural dyes that can cover, stain, or darken your hair, regardless of your original hair color.

If you’re making the switch to a bar shampoo for the first time, we do have to warn you that there is a bit of a transition period. Lastly, these shampoo bars can also cause build-up on your hair and scalp. This is because they contain natural oils and waxes that can accumulate over time, making your hair look greasy and dull. Hair-darkening shampoo bars work best if you leave the shampoo in your hair for some time. This allows the shampoo to absorb more plant pigments.

At a Glance: Best Darkening Shampoo

All of the hair coloring properties in this shampoo are natural and plant-based, including: ginseng, polygonum multiflora, sesami nigrum, and ganoderma lucidum.