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Amika:

Amika Water Sign Hydrating Hair Oil

Amika Water Sign Hydrating Hair Oil

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Regular price $33.00 USD
Sale price $33.00 USD Regular price
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  • Estimated Delivery : November 17, 2026
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Amika Water Sign hydrating hair oil for thick, dry or coarse strands

Water Sign is a thick, glossy, silicone-free treatment oil for dry, textured or coarse hair, types 2a to 4c. Reach for it when thick, textured hair or very dry ends need a moisture boost, or before heat styling.

It is color safe and suitable for keratin, Brazilian or other chemically treated hair. The formula is vegan certified and cruelty free.

What the brand says it does

Its published figures come with no trial size, length or method:

  • Attracts 2.7x more hydration
  • Reduces frizz by 69% for 24 hours
  • 51% less breakage
  • Heat protection up to 450°F, plus UV protection
  • A high-shine finish; with no silicones in the way, nutrients sink into strands and the oil seals them in

On the ingredients behind it:

  • 8-oil blend: includes jojoba, coconut and castor oils to lock in moisture.
  • Squalane: helps protect from dehydration and restore lipid barriers, to prevent moisture loss and restore suppleness.
  • Hyaluronic acid: helps plump up dry hair by pulling in moisture from the air.
  • Spirulina extract: provides essential fatty acids, amino acids, vitamin A and beta-carotene.

Styling oils, repair masks and the rest of the line sit with our Amika hair oils and treatments.

Product specification

Size 1.7 oz
Form Silicone-free treatment oil
Named ingredients 8-oil blend including jojoba, coconut and castor oils; squalane; hyaluronic acid; spirulina extract
Hair type Dry, textured or coarse, types 2a to 4c
Heat and UV Heat protection up to 450°F; UV protection
Starting amount 1 to 2 drops; 2 to 3 pumps for medium to thick hair; 3 to 4 pumps for thick, dry or coarse hair
Free from Silicones, sulfates, parabens, mineral oil
Treated hair Color safe; suitable for keratin, Brazilian or other chemically treated hair

How to use it

A little goes a long way. Start with 1 to 2 drops and add more if needed. For medium to thick hair, use 2 to 3 pumps; for thick, dry or coarse hair, use 3 to 4 pumps.

  • Damaged or color-treated hair: apply to damp strands before heat styling.
  • Curls: blend a small amount into your hands and press into heat-styled curls before brushing out.
  • Braids: apply directly onto the scalp and throughout damp hair.
  • Flyaways: tame them with any excess oil on your hands.

Used too much? Perk Up Plus Extended Clean Dry Shampoo absorbs the excess, per the directions. Avoid contact with eyes.

Before you buy

Is it silicone-free? Yes. It is labelled sulfate free and paraben free, with no mineral oil.

Does it list polyglutamic acid? The brand names it as a key ingredient, but its published ingredient list does not include it, so we leave it out here. Sodium hyaluronate, squalane and spirulina are on the list.

Can the ingredient list change? It can. To confirm the formula suits you, check the list printed on your bottle.

  • 5 stars: 6 (75%)
  • 4 stars: 1 (13%)
  • 3 stars: 1 (13%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
m
michelle mcgee
A little goes a long way. Put on wet or dry.

Fantastic product! My hair has crazy texture and this literally helps the hydration and frizz. Smells great and makes your hair shine. Great value for the price and the bottle last a long time. You can travel with it.

v
vanesa costa
Aceite

recomiendo solo para la noche.es muy espeso y se ve sucio el pelo cuando lo colocas.

a
abby washburn
great hair oil for thick, dry-ish hair!

this is good for my very thick, dry-leaning hair (about 1C, i guess?)it moisturizes well and isn’t greasy at all (unless you use way too much). the bottle is really beautiful and offers a larger amount of product compared to other similarly priced hair oils, which are usually only about 1 oz. not the cheapest, but if you use it sparingly (which you should), then it’ll last a long time.

D
Dawn
One of a kind hair oil

I have been searching for a product that will help my fine, bleached hair retain moisture. I bought the amika wizard leave in treatment, the amika hydro rush leave in treatment, the amika hair masks, and they worked ok but my hair felt weighed down. Then my hair dresser used this oil on me and my hair felt like silk! So I immediately ordered it when I got home. I was so shocked that 3 pumps of this oil made my hair so soft! The other amika products work decent but this oil is my holy grail now. I was using all those amika products in rotation with the k18 products, oloplex, the briogeo hair care line, and finally the unite 7 seconds detangler. Out of all of these products my favs are the amika water sign oil and the unite 7 seconds detangler. They are the only 2 I’ll continue buying. As for shampoo and conditioner I’m still on the hunt. Right now I’m using up the briogeo set but I might go back to amika shampoo/ conditioner.

Z
Zoie
LOVE IT

My all time favorite hair oil. Idk if it’s the hyaluronic acid that makes it instantly lock into the strands, but I feel so moisturized after using this. I also love the scent, I feel very tropical.

w
willdtee
The solution to the tangles

I absolutely love this hair oil. If you’re like me and have a lot of hair but it’s fine and prone to tangling, this product is a game changer. It instantly smooths and detangles without weighing my hair down.The formula is very lightweight and absorbs well, so it doesn’t make my hair look greasy or heavy. I especially appreciate that it doesn’t ruin my curls and my hair still looks soft, defined, and bouncy after applying it.A little goes a long way, and it works great on both damp and dry hair. It leaves my hair feeling soft, manageable, and healthy without any buildup.Overall, this is a great option for anyone with fine or easily tangled hair who wants moisture and shine without sacrificing volume or curl definition. I would definitely recommend it and will continue to repurchase.

K
Kathryn O.
10/10 hair oil but packaging is a hazard in the bathroom

Love this hair oil. It does wonders for my very frizzy hair. I mix it with the gel from the same brand it brings out my waves perfectly without making my hair feel like it has a ton of product in it. My only complaint is the packaging. At first I loved the glass. Felt very luxurious! However given that it's an oil and I usually use it on my wet hair the glass can be slippery. The worst happened this morning and it slipped out of my hand onto the tiled floor of my bathroom and it fully shattered into a million tiny pieces! 😭RIP my $32 hair oil.

A
Ashley
The truth is in the name!

I have had this product pending in my save for later for a while. My latest hair stylist had turned me into Amika. I’m slowly testing more and more products. Truly the more I try the more I’m in love with the brand. My hair has been through a lot. From stripping to adding color to keratin treatments to flat ironing and blow drying. And no I have gone from living on the East Coast to the West Coast where it’s much dryer. I started incorporating this product just over the last week. I promise you I can tell the difference. What I’d like to do is get my hair squeaky, clean and then I’ll add the product with my hair is wet. If I notice that the oil grabbed a little too much, I will balance it out with the Amika dry shampoo. My hair feels so hydrated. I honestly can’t remember the last time. My hair has felt this pretty and soft. If you’re looking to revamp your hydration and genuinely try something new, I highly recommend this product. This brand can get a little pricey. But I will say you do get a good amount of product for your money. And it’s also a product that is going to work.

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