La Casta
La Casta Aroma Esthe Hair Soap 16, 300ml
La Casta Aroma Esthe Hair Soap 16, 300ml
@cosme rating: 5.3/7.0
The power of plants makes hair color shine with glossy hair
✓ 100% authentic
✓ Ships from Japan in 3-5 days
✓ Duties prepaid for US orders
✓ Tracked delivery via Japan Post
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What it is
Contains organic plant ingredients and L-CC+ complex to protect hair and scalp damaged by coloring. Leaves hair shiny and high-quality, highlighting the color. Floral herb scent for a glamorous feel.
Ingredients
Water, Sodium C14-16 Olefin Sulfonate, Cocamide DEA, TEA-Cocoyl Alanine, Cocobetaine, TEA-Cocoyl Sarcosine, Chamomile Flower Oil, Lavender Oil, Grapefruit Peel Oil, Eucalyptus Leaf Oil, Phytosteryl Rice Bran Oil, Zein, Inula crissum flower/leaf extract, Yuzu fruit extract, Hydrolyzed White Mustard Seed Extract, Althaea officinalis root extract, Echinacea purpurea extract, Comfrey Leaf Extract, Avocado Oil, Rosa canina fruit oil, jojoba seed oil, polyquaternium-10, caprylic/capric triglyceride, citric acid, butylene glycol, dipropylene glycol, sodium chloride, oleth-10 phosphate, PEG-20 sorbitan cocoate, hydroxyalkyl (C12-14) hydroxyethyl sarcosine, sodium cocoamphoacetate, TEA-cocoyl glutamate, TEA-cocoate, caramel, hydrolyzed gardenia extract, ethanol, phenoxyethanol, fragrance
How to use
Step 1: Pre-wash with lukewarm water before applying the shampoo. Lightly remove dirt, dust, styling products, etc. from your hair and scalp, and thoroughly wet your hair to prevent friction between strands. Step 2: Take an amount about the size of a 500 yen coin* in your hand, spread it in your palm, lather lightly, and spread it over your entire hair. Use the pads of your fingers to incorporate air into the lather, and gently envelop your hair as you wash. It is important to lather generously to prevent friction on your hair, which can cause damage. With a focus on the lifting effect, shampoo while massaging in zigzag motions, lifting your scalp. Massage with your fingers in circular and zigzag motions. *Adjust the amount according to the level of dirt and the length and volume of your hair. If any shampoo remains, it can cause dandruff and itching, so be careful not to use too much.
We ship internationally from Japan!
Frequently Asked Questions
Is this authentic?
Yes. We only buy from official retailers and directly from the brands here in Japan. Never resellers, never grey market stock.
We are beauty lovers too, so we know the worry, especially with something you are putting on your face. Authenticity is 100% guaranteed by us.
What are your shipping rates?
On orders under US$75, shipping is a flat US$20 to the United States and US$10 to all other countries.
Orders of US$75 or more ship free, applied automatically at checkout. Your exact shipping cost is shown before you pay.
How long does delivery take?
These estimates are for International Airmail (Tracked) and include 3 to 5 business days of processing in Japan.
- United States: 12 to 15 business days
- Canada, United Kingdom, France, Germany: 9 to 12 business days
- Australia, New Zealand, Denmark, Finland, India, Indonesia, Italy, Netherlands, Spain, Sweden, Switzerland: 10 to 13 business days
- China, Hong Kong, Malaysia, Singapore, South Korea, Taiwan, Thailand, Vietnam: 8 to 10 business days
- Rest of the world: 11 to 18 business days
Actual delivery can be affected by customs clearance, seasonal congestion, or carrier delays in the destination country, all of which are outside our control.
Do you offer express shipping?
Yes. As of 22 July 2026, we offer International Express Mail through Japan Post. The cost is based on order weight and is calculated automatically at checkout.
Will I pay customs or import fees?
US orders: No. As of July 1, 2026, all US orders ship DDP (duties delivered prepaid), meaning we prepay all import duties on our end. Nothing is due at your door.
Orders outside the US: Possibly. Duties and import taxes are set by your local customs authority and are not collected at checkout, so any charges on delivery are your responsibility.
We're working on rolling out prepaid duties for more countries soon.
I usually use La Casta's Curly Hair Mask 11 and Enrich Glow. I found out they had trial products, so I bought it to try it on hair damaged by coloring. I plan to use it after my next coloring. I'd also like to try other trial products.
I bought this at the Cosme Kitchen store. I stopped by after getting my hair colored at the salon and was looking at La Casta's deep mask. The sales associate mentioned that after coloring, hair tends to become alkaline. Washing with No. 16 for about a week can restore the alkaline state and prolong color retention, so I purchased the trial set. The trial set was used for a week after coloring, and the amount was enough for two washes (two weeks' worth) after coloring. It felt pleasant to wash with, but I didn't notice any difference in color retention compared to other shampoos. An AI analysis of all the ingredients revealed that the ingredients weren't particularly likely to prolong color retention, and the cleansing ingredients seemed a little strong. While I don't take everything at face value, the AI analysis showed that Plus Au, which I've been using recently, is better for color retention. There are other dedicated products (from other manufacturers) for restoring hair's alkalinity, and hematin seems to be effective, so I'll try those in the future. So, I probably won't be buying it again.
I love this shampoo and use it all the time.
16 I've been cheating on this with other brands for a while, but I finally used this one. It lathers well, has a nice scent, and I really like it. I've hardly used other types, so I'd like to try them.