Step4 Four LE 1000ml by HairTree
Delivers damage repair, hair quality improvement, shine, and manageability with a premium after-treatment formula.
Enriched with high-concentration rebalminic acid and advanced beauty ingredients, it efficiently repairs and strengthens hair for a healthier, more beautiful finish.
Key Features
- Fiber Hance × Cure Taine repairs damage from within and strengthens hair structure
- Tosteal & Sugar Squalane coat the hair surface to create a luminous shine
- Protocatechuic acid provides antioxidant care, gently protecting color-treated hair
- High-concentration rebalminic acid improves hair quality, reducing frizz and flyaways for easier handling
- Delivers rich active ingredients at a more affordable price than previous versions
Active Ingredients
| Ingredient | Description |
|---|---|
| Fiber Hance | Won gold at the World Raw Material Exhibition. Binds with keratin to promote healthy hair structure |
| Protocatechuic Acid | A polyphenol derived from hydrolyzed tannin. Penetrates damaged areas to repair hair |
| Sugar Squalane | Smooths cuticle to enhance natural shine |
| Tosteal | Penetrates hair internally to repair hollows causing split ends and frizz, improving touch and texture |
| Cure Taine | Adheres to negatively charged damaged hair to repair and strengthen |
| Keratin | Strengthening and resilient component |
FAQ
How does this product improve hair strength?
Fiber Hance and Cure Taine work together to repair damage from within the hair shaft and strengthen the hair structure, improving overall resilience.
Does it work well on color-treated hair?
Yes, protocatechuic acid provides antioxidant protection, helping to preserve color and reduce damage after coloring.
Can it reduce frizz and flyaways?
The high concentration of rebalminic acid helps smooth the hair cuticle and reduce frizz and flyaways, resulting in more manageable hair.

Adrian Manning –
After using this product regularly, my hair feels much softer and less frizzy. The shine is noticeable, especially after washing. I’ve noticed less breakage since starting to use it. My color-treated hair stays vibrant without fading quickly.
Austin Murray –
It’s a big improvement over my previous treatments. The hair feels stronger and more manageable. The shine is natural and not fake. I use it once a week after washing and it makes a real difference.
Ella Walsh –
I had very damaged hair from heat styling and coloring. After using this for two weeks, the hair is smoother and less prone to split ends. The texture is much better and it feels healthier.
Joshua Miller –
The formula works well without being greasy. I apply it to damp hair and leave it for 5 minutes. My hair looks shinier and feels more defined. It’s a great addition to my hair care routine.
Austin Stewart –
I’ve tried several after-treatments, but this one stands out. The repair is deep and the shine is natural. My hair no longer feels brittle or rough. I recommend it to anyone with damaged or color-treated hair.