When hair feels straw-like, rough, or lifeless, a weekly deep mask is one of the fastest ways to bring it back. The Margaret Josefin Deep Hair Mask is a Japanese salon treatment built around marine collagen — an intensive conditioner that floods dry, damaged hair with moisture and leaves it softer, smoother, and shinier. Here is what makes it work and how to get the most from it.
What Is the Margaret Josefin Deep Hair Mask?
It is a rich, concentrated hair mask designed for straight and naturally wavy hair, with a high concentration of active ingredients. Used once or twice a week — or daily for severely damaged hair — it deeply conditions and helps repair the look and feel of dry, over-processed strands.
The Marine Collagen Difference
The mask is built on marine and heat-coat collagen. Hydrolyzed collagen is prized in haircare because it binds to the hair surface, helping smooth the cuticle and lock in moisture. The result is hair that feels stronger and more supple, with less of the brittleness that leads to breakage. Alongside it, plant-derived hyaluronic acid from okra extract and algae acid from seaweed penetrate wet hair to restore moisture and elasticity.
What's Inside, and What It Does
- Marine & heat-coat collagen — coat and smooth the cuticle, helping hair hold moisture and feel stronger.
- Okra hyaluronic acid & seaweed algae acid — deeply hydrate and restore elasticity.
- Hydrolyzed silk & sodium hyaluronate — add slip, softness, and lasting moisture.
- Olive oil, vitamin E & vitamin C — nourish and condition for a healthy-looking finish.
- Chamomile extract — a gentle, soothing botanical.
The Benefits
- Deep conditioning for dry, damaged, and over-processed hair.
- Restored moisture and elasticity, so hair feels supple instead of brittle.
- Smoother, softer texture with noticeably less frizz.
- Healthy shine and improved manageability.
How to Use It
- After shampooing, apply the mask through your hair from roots to ends.
- Massage gently to distribute.
- Leave on for about 5 minutes.
- Rinse thoroughly with water.
Use once or twice a week as a treatment. If your hair is severely damaged, you can use it daily until it recovers. Avoid contact with eyes.
Who It's For
The Margaret Josefin Deep Hair Mask is ideal for straight and naturally wavy hair that is dry, damaged, color-treated, or simply in need of intense moisture and softness.
Pair It for Daily Repair
For ongoing care between masks, layer the Margaret Josefin Intensive Hair Care Essence — a lightweight leave-in that protects and smooths damaged hair every day.
Why Buy It from Kija Hair Salon
The Margaret Josefin Deep Hair Mask is a treatment our stylists trust, stocked and shipped fast from our salon in Irvine, California. Every product we retail is curated to keep your hair healthy and beautiful between salon visits, and orders over $55 ship free.