Aritha

[ah-REE-thah]

What is aritha (reetha) powder?

Aritha powder is the dried fruit of the soapnut tree, Sapindus mukorossi, finely ground into a powder you mix with warm water to wash your hair and scalp. Spierb Aritha Powder is that one ingredient and nothing else: Sapindus Mukorossi Fruit Powder (100%), dried, finely ground and triple sifted.

The fruit contains saponins, plant compounds that become surface-active in water, which is why a soapnut wash lifts oil and everyday residue from the roots. Aritha is the cleansing powder of the Spierb range; shikakai is the gentler cleansing partner. For the method, see how to wash your hair with aritha powder.

What is aritha called in English?

In English, aritha is called soapnut, or soap nut. You will also see soapberry, which is used more broadly for Sapindus fruits and does not pin down the species on its own. The botanical name is the reliable check, and on our pack it reads Sapindus Mukorossi Fruit Powder (100%).

Is aritha powder the same as reetha powder?

Yes. Aritha and reetha are two common names for the same soapnut fruit. You may also see ritha, rita, reeta, retha, arita and areetha. They are regional spellings rather than different herbs, so you are not choosing between two products.

Where does aritha come from?

Aritha comes from the fruit of a Sapindus tree, and every Spierb powder is sourced from India. The fruit is dried, finely ground and triple sifted, which makes a smooth wash that spreads and rinses easily. Sealed and dry, the powder keeps for 2 years from the date of packaging.

The name soapnut describes what the fruit does rather than what it is: the fruit is not a culinary nut, but its saponins foam and lift oil in water like soap. Households across South Asia used it for hair long before bottled shampoo, often alongside shikakai and amla. Those three kept separate jobs, and they still do here: reetha cleanses, shikakai is the gentler wash partner, and amla is the care-focused fruit powder. That is heritage and context, not proof of a biological effect.

What is reetha powder good for?

Reetha's clearest job is cleansing. Mixed with warm water and massaged through wet hair, it helps lift excess oil and ordinary residue so they rinse away, leaving the roots lighter and fresher.

• Oily roots and scalp. Reetha is the more cleansing of our two wash powders.
• Everyday build-up. Ordinary styling residue and pre-wash oil rinse away more easily after a reetha wash. The build-up guide covers that job in full.
• Blends. Reetha and shikakai are the classic pair, 1 tablespoon of each. Amla, bhringraj, brahmi or Aloe Vera Powder add the care side of a wash.

Powder, whole soapnuts and soapnuts sold for laundry

Most reetha confusion is about which soapnut product you are holding, not which plant it is.

• Whole soapnuts are soaked or simmered and strained, and the shells can sometimes be used again. Powder disperses through the wash and is mixed fresh each time, so "how many washes" figures written for shells don't transfer.
• Reetha chilka means the dried shell or rind. Ours is made from the dried fruit, so it is sold as Aritha or Reetha Powder.
• Soapnuts sold for laundry use the same saponin chemistry, which is part of why the fruit is called soapnut. That is context; this pouch is for hair and scalp.
• Powder is not an extract. An extract is a separate preparation in which selected compounds are drawn out and often concentrated. Ours is milled fruit.

What will I notice, and what won't reetha do?

Expect a tan-brown slurry, a light and variable foam, cleaner roots and hair that feels lighter once it is dry. The powder disperses rather than dissolving, so fine sediment is normal, and foam depends on concentration, agitation, how oily the hair was and your water. Low foam doesn't mean poor cleansing: judge the wash by how the roots feel after rinsing.

It helps to know the edges of the job too:

• It cleans the oil that is there now, and does not change how much oil your scalp makes.
• It is a cleanser, not a colour powder. For plant-based colour, henna and indigo are the Spierb powders.
• It does not make hair grow or regrow. A clean, comfortable scalp and hair that combs easily are what it contributes to a routine; amla, bhringraj and brahmi are the care powders.
• It washes away loose flakes and oily residue, so a flaky-feeling scalp can look cleaner. Flaking that keeps returning has its own causes.
• It works in water, not in oil. For pre-wash oiling, amla or bhringraj fit more naturally, and reetha washes the oil out afterwards.
• It is made for hair and scalp. For face masks, look at Multani Mitti, Orange Peel, Aloe Vera Powder or Neem.

Is aritha safe, and how do I patch test?

Used on hair and scalp as directed, reetha is a simple wash. It is for external cosmetic use only, never eaten or drunk. Don't apply it to a scalp that is broken, grazed or significantly inflamed, and stop if you notice burning, swelling, persistent itching or a rash.

Keep the pouch sealed, cool and dry, use a dry spoon, and keep it out of reach of children. Mix only what you need, because a water-based wash isn't a preserved product. Colour, aroma, texture and foam vary a little between batches, which is normal for a milled fruit powder. If a wash leaves the lengths dry or tangled, reetha side effects has the fixes.