Henna Powder Benefits — How to Use for Hair & Skin

By Wow Herbs Team | Updated: September 2026 | 6 min read

Henna, botanically known as Lawsonia inermis and also called Mehndi, is one of the most widely used plant dyes in the world. For thousands of years across South Asia, the Middle East and North Africa, its dried, ground leaves have been made into a paste for colouring hair, conditioning it, and creating temporary body art for weddings and celebrations.

Wow Herbs' Henna Powder is 100% pure henna leaf powder, processed in our in-house UK facility to maintain its natural quality, fine texture, and freshness, and free from additives, preservatives, or artificial chemicals. It is for external use only. This guide covers what henna does, how to use it, and how to use it safely.

What is Henna Powder? — The Compound Science

Henna's colouring and conditioning qualities are linked to compounds found in the leaf.

Lawsone:
The natural dye molecule in henna and the source of its orange-red colour. It binds to the keratin in hair and skin, which is why henna stains rather than washes off.

Tannins:
Astringent plant compounds that contribute to henna's traditional use in hair and scalp care.

Flavonoids (including Luteolin):
Plant compounds that add to henna's broader phytochemical profile.

Henna Powder Benefits — What is It Traditionally Used For?

1. Natural Hair Colouring

Henna gives hair warm orange-red to copper tones. On grey or light hair the colour is more vivid, and on dark hair it adds a subtle reddish tint that shows in the sun. Henna adds colour but does not lighten hair.

2. Hair Conditioning and Shine

Henna coats the hair strand, and it has long been used as a conditioning hair mask to add shine, body, and smoothness.

3. Brown to Black Shades with Indigo

Henna is the first step in the traditional two-step method for dark brown to black hair. Apply henna first, then indigo. See our guide to Indigo Powder for Hair for details.

4. Traditional Mehndi and Temporary Body Art

Henna paste is central to mehndi, the temporary skin art applied for weddings, festivals, and celebrations across many cultures.

5. Traditional Skin and Scalp Care Routines

Henna is also part of traditional skin and scalp routines, and it is valued as a natural, plant-based ingredient. Wow Herbs' Henna Powder can be used on hair and skin, for external use only.

Important Guidance for Using Henna Powder

Natural henna is generally well tolerated, but a few points deserve attention:

• External use only. Never swallow henna powder or paste.
• Always patch test first. Apply a small amount of paste behind the ear or on the inner elbow, leave it for 48 hours, and don't use it if you notice redness, itching, or irritation.
• Never use "black henna". Natural henna is never black. Products sold as black henna, particularly for body art, can contain PPD, a chemical that can cause severe skin reactions. Pure henna stains orange-red to reddish-brown.
• People with G6PD deficiency should speak to a doctor before using henna, and it should not be applied to babies or young children without medical advice.
• Avoid contact with eyes. Do not use henna on eyebrows or eyelashes.
• Discontinue use if irritation occurs, and seek advice if you are unsure.
• Henna stains skin, nails, clothing, and surfaces, so wear gloves and protect your clothes.
• Tell your hairdresser if you have used henna. It coats the hair and can make later bleaching or chemical colouring unpredictable.
• Keep out of reach of children.

How to Buy Henna Powder — What to Look For

• Genuine Lawsonia inermis leaf powder: Confirm the product is made from the leaf and identified by its correct botanical name.
• One ingredient only: Pure henna powder should list only henna leaf. Avoid anything containing PPD, metallic salts, added synthetic dyes, or unexplained "colour enhancers".
• A natural colour and scent: Genuine henna is typically a khaki to olive-green, with an earthy, grassy smell.
• Freshness: Henna's dye content fades with age, so choose sealed packaging and a supplier with regular turnover.
• Fine, sifted texture: A finely ground powder mixes into a smooth paste, applies evenly, and rinses out more easily.
• Quality control: Choose brands that produce under controlled processes, test for purity and safety, and provide certificates on request.

You can explore a quality option here: Shop Henna Powder at Wow Herbs.

How to Use Henna Powder

For hair:

1. Mix the powder with water to form a smooth paste.
2. Apply evenly to hair, wearing gloves.
3. Leave for your desired time. A longer time generally gives a deeper colour.
4. Rinse thoroughly with water.

For skin (external use only):
Mix with water to form a paste, apply as needed, and rinse after use.

Tips: Many people let the paste rest before applying so the dye can release, and a slightly acidic liquid such as lemon juice or tea is often used for this. Do a strand test to check the shade, and protect your hairline with a little oil or balm to avoid staining.

Storage: Store in a cool, dry place away from moisture and sunlight.

Frequently Asked Questions

Is henna the same as mehndi?
Yes. Mehndi is the Hindi and Urdu name for henna, and it also refers to the art of applying henna to the skin. Both come from Lawsonia inermis.

Will henna turn my hair black?
No. Natural henna gives orange-red to copper tones. For dark brown to black shades, apply indigo after henna.

Does henna lighten hair?
No. Henna adds colour, so on dark hair it gives a subtle red tint rather than a lighter shade.

How long does henna last?
On hair, colour builds with repeated use and gradually fades. On skin, a henna stain typically fades within a week or two.

Is henna safe?
Pure, natural henna is generally well tolerated, but any plant product can cause a reaction, so always patch test. Avoid "black henna" products altogether, and speak to a doctor first if you have G6PD deficiency.

Conclusion

Henna has been used for thousands of years to colour and condition hair and to decorate skin, and it remains one of the most popular plant-based options today. Used carefully, with a patch test first and with pure, fresh powder, it is a simple way to add natural colour and shine. If you're ready to try it, you can explore Henna Powder at Wow Herbs.

→ Shop Henna Powder at Wow Herbs
Use code FIRST10 for 10% off your first order. Free delivery on orders over £20.

Related: Indigo Powder for Hair — Benefits & How to Use It

Disclaimer: For external use only. For informational purposes only; results vary with natural hair colour, condition, and previous treatments. Always patch test 48 hours before each use. Do not use on eyebrows or eyelashes. Discontinue if irritation occurs and seek medical advice if you experience a reaction. Consult a doctor before use if you have G6PD deficiency. Keep out of reach of children.