MUCOTA is a Japanese salon hair care brand, and we carry two of its treatments at Kija Hair Salon in Irvine: the Promille Hair Treatment, a rich rinse-out for dry or damaged hair, and the CS+DD Oil Treatment, a leave-in seaweed oil for color-treated and straightened hair. They do different jobs and work well together. Here is how they differ, what’s in each, and how to use them together.
The short answer: the Promille Hair Treatment is for wash day, after shampoo; the CS+DD Oil is the leave-in you smooth through damp ends before drying. If your whole head feels dry after washing, start with Promille. If your ends are color-treated, straightened or dry, start with CS+DD.
Quick Comparison
| Promille Hair Treatment | MUCOTA CS+DD Oil Treatment | |
|---|---|---|
| Type | Rinse-out treatment | Leave-in oil, no rinsing |
| Size | 200 g | 120 ml |
| Best for | Dry or damaged hair | Color-treated, straightened or chemically processed hair; dry, damaged ends |
| When to use | Wash day, after shampoo | After towel-drying, before you dry and style |
| Key ingredients | Shea butter and plant oils (argan, jojoba, camellia, avocado, rosehip) with flower extracts | Linseed oil (omega-3 fatty acids) with Gagome and Karafuto kombu seaweed extracts |
| Price | $30 (last few) | $44 |
Prices checked October 2026. Both are made in Japan and ship from our salon in Irvine, California.
Promille Hair Treatment: The Wash-Day Rinse-Out
Promille is MUCOTA’s line for dry, damaged hair. The Promille Hair Treatment is a rinse-out treatment blended with shea butter and a long list of plant oils (argan, jojoba, camellia, avocado, rosehip, rice germ, sunflower, grape seed, meadowfoam and evening primrose), plus chamomile, calendula, linden and cornflower extracts. It has a light peach-and-osmanthus scent.
How to use it: after shampooing, work an appropriate amount through your hair, then rinse with warm water. Because it uses natural ingredients, a jar can occasionally show small clumps or a slight change in color or scent; that doesn’t affect quality.
Good to know: our supplier can no longer get Promille, so the few treatments we have left are the last ones.
MUCOTA CS+DD Oil Treatment: The Daily Leave-In
The CS+DD Oil Treatment is from MUCOTA’s Color Straight Plus range. It combines linseed oil, which contains omega-3 fatty acids, with Gagome kombu and Karafuto kombu seaweed extracts to give damaged ends moisture and shine and to help protect the hair. It is made for hair that has been colored, straightened or chemically processed.
How to use it: apply a small amount to towel-dried hair, focusing on the mid-lengths and ends. It spreads more easily on damp hair. Comb through, then dry and style as usual; there is nothing to rinse out.
The formula is silicone-based (cyclopentasiloxane and dimethicone come first on the label), which is what gives the smooth, glossy finish. If you avoid silicones, check the full ingredient list on the product page.
How to Use Them Together
| Step | Product | How |
|---|---|---|
| 1. Shampoo | Amatora QUO Hair Bath ($58) | Our wash-day pick now that Promille Shampoo is gone; made for color-treated hair |
| 2. Treat | Promille Hair Treatment | Work through the hair after shampooing, then rinse with warm water |
| 3. Leave in | MUCOTA CS+DD Oil | Smooth a small amount through damp mid-lengths and ends |
| 4. Style | Your usual routine | Blow-dry or style as usual |
If You Only Buy One
| Your hair | Start with | Why |
|---|---|---|
| Feels dry and rough all over after washing | Promille Hair Treatment | A rich rinse-out that treats the whole head on wash day |
| Color-treated or straightened, with dry ends | CS+DD Oil Treatment | A leave-in you use after every wash, made for chemically processed hair |
| Both | Both | Promille on wash day, CS+DD after towel-drying |
What Happened to Promille Shampoo?
Promille Shampoo (200 g) is sold out, and our supplier can no longer get it, so we won’t be restocking it. For a Japanese shampoo to use before the Promille Treatment, we suggest the Amatora QUO Hair Bath. Our guide to the best Japanese shampoos compares more options.
Frequently Asked Questions
Is MUCOTA a Japanese brand?
Yes. MUCOTA is a Japanese salon hair care brand, and both products we carry are made in Japan.
What is the difference between Promille and CS+DD?
Promille Hair Treatment is a rinse-out you use on wash day for dry or damaged hair. CS+DD is a leave-in oil for color-treated or straightened hair that you apply after towel-drying and don’t rinse out.
Does the CS+DD Oil contain silicone?
Yes. Cyclopentasiloxane, dimethicone and dimethiconol are among its main ingredients, together with linseed, olive and other plant oils and seaweed extracts.
Is CS+DD a heat protectant?
It is a leave-in for moisture and shine that you apply before drying and styling. For a product made specifically for heat styling, see the Kida 9 Re-Bonding Gel, a leave-in heat protection lotion activated by blow-drying.
Where can I buy MUCOTA in the U.S.?
We ship both MUCOTA treatments from our salon in Irvine, California, and U.S. orders over $40 ship free.
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