Ships from California

Free Shipping over $99

Ships from California

Free Shipping over $99

Cancel
Search

help

Your Cart

Your cart is empty

Price:$22.99
Recently Sold 20+

SKU: mil81-4-x-0-3-oz

Recently Sold 20+
Price:$22.99
Recently Sold 20+

SKU: mil81-4-x-0-3-oz

The selected product combination is currently unavailable.

Be notified when this item is back in stock

Order soon 0 left in stock

Ships from California

Description
Ingredients
Product Details

Step into the world of professional Japanese hair care with the Milbon Signature Smooth No. 4 Weekly Booster, a specialized deep-conditioning treatment designed to prolong that "just-left-the-salon" feeling. Specifically formulated for medium hair textures, this intensive weekly ritual targets the structural integrity of your strands from the inside out. Each vial acts as a concentrated surge of smoothing technology, utilizing Milbon’s proprietary SSVR-Silk™—a powerful, silk-based complex that fills in the hollow "tubular gaps" often found in chemically treated or stressed hair. By reinforcing these internal structures, the treatment restores the natural bounce and resilience of your hair, ensuring it feels as healthy as it looks.

The sensory experience is as refined as the results, featuring a sophisticated fragrance profile with top notes of blackcurrant and apple that transition into a floral heart of lily of the valley (Muguet) and jasmine. As you massage the silky cream from mid-lengths to ends, the smoothing collagen works to seal the hair cuticle, effectively trapping moisture and creating a glass-like shine. Unlike heavy masks that can leave medium hair feeling weighed down or greasy, this formula provides a weightless, "slip-through-your-fingers" softness that maintains movement and volume. It is the ultimate secret weapon for those battling dullness, tangles, or textural inconsistencies caused by environmental stressors and heat styling.

This pack contains four convenient, travel-friendly tubes, providing a full month of intensive maintenance to bridge the gap between salon visits. By incorporating this booster into your Sunday self-care routine once a week in place of your regular conditioner, you extend the life of professional smoothing treatments for up to five weeks. The result is a visibly brighter, more vibrant hair color and a texture that feels remarkably supple and manageable. Whether you're prepping for a busy week or recovering from a weekend of styling, these "booster shots" ensure your hair remains in its prime state: luminous, silky-smooth, and effortlessly chic.

*Ingredients may vary slightly due to formula updates by brands. Please consult packaging for most accurate list of ingredients

Product Recommendations

Milbon Smooth No.4 Weekly Booster for Fine Hair
Recently Bought 20 +
davines minu hair serum
Echosline Seliar Discipline Smoothing Serum

Frequently Asked Questions

What ingredients are in Milbon Smooth No.4 Weekly Booster and are they safe for sensitive scalp?

Milbon Smooth No.4 Weekly Booster is formulated with Milbon's proprietary smoothing complex designed specifically for medium hair textures. The formula includes conditioning agents and natural plant extracts. It's dermatologist-tested and suitable for most scalp types, though we recommend patch testing if you have known sensitivities to hair care products. For specific ingredient concerns, check the full ingredient list on the packaging or consult with your stylist.

How often should I use Milbon Smooth No.4 Weekly Booster on medium hair?

Milbon Smooth No.4 is designed as a weekly treatment, typically used once per week. Apply it to damp hair after shampooing, focusing on mid-lengths to ends. Leave it on for 5-10 minutes before rinsing thoroughly. For medium hair, once weekly is ideal for maintaining smoothness without over-treating, though you can adjust frequency based on your hair's response.

Can I use Milbon Smooth No.4 Weekly Booster if I have color-treated hair?

Yes, Milbon Smooth No.4 is safe for color-treated hair. The formula is designed to be gentle and conditioning, which actually helps maintain color vibrancy by keeping the hair cuticle smooth and sealed. Using this weekly treatment can help extend color life by preventing frizz and maintaining shine. Always use color-safe shampoos in your regular routine for best results.