---
product_id: 596193124
title: "RULE No.4 Stem Cell Hair Growth Serum, Natural Oil with Biotin, Castor Oil & DHT Blocker Saw Palmetto for Thicker Fuller Longer Hair Regrowth, Scalp Serum Hair Loss Treatments for Men & Women"
brand: "rule cosmeceuticals"
price: "¥31703"
currency: JPY
in_stock: true
url: https://www.desertcart.jp/products/596193124-rule-no-4-stem-cell-hair-growth-serum-natural-oil
store_origin: JP
region: Japan
---

# Stem cell-powered formula Easy weekly application DHT blocker for hair loss RULE No.4 Stem Cell Hair Growth Serum, Natural Oil with Biotin, Castor Oil & DHT Blocker Saw Palmetto for Thicker Fuller Longer Hair Regrowth, Scalp Serum Hair Loss Treatments for Men & Women

**Brand:** rule cosmeceuticals
**Price:** ¥31703
**Availability:** ✅ In Stock

## Summary

> 🌿 Unlock your hair’s full potential—because your confidence deserves the best!

## Quick Answers

- **What is this?** RULE No.4 Stem Cell Hair Growth Serum, Natural Oil with Biotin, Castor Oil & DHT Blocker Saw Palmetto for Thicker Fuller Longer Hair Regrowth, Scalp Serum Hair Loss Treatments for Men & Women by rule cosmeceuticals
- **How much does it cost?** ¥31703 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/596193124-rule-no-4-stem-cell-hair-growth-serum-natural-oil)

## Best For

- rule cosmeceuticals enthusiasts

## Why This Product

- Trusted rule cosmeceuticals brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Revive Your Roots:** Stem cell technology stimulates hair growth at the follicle level for thicker, fuller hair.
- • **Stop Hair Shedding Now:** DHT blocker saw palmetto helps slow down hair loss before it starts.
- • **Power-Packed Natural Blend:** Biotin, castor oil, saw palmetto, and ginseng combine for proven hair thickening and scalp nourishment.
- • **Effortless Confidence Boost:** Just one dropper weekly—no complicated routines, perfect for busy professionals.
- • **Swiss Apple Nutrient Infusion:** Deeply nourishes scalp skin to create the ideal environment for unstoppable hair regrowth.

## Overview

RULE No.4 Stem Cell Hair Growth Serum is a potent, natural hair loss treatment designed for men and women. Featuring a stem cell-powered formula enriched with biotin, castor oil, and DHT-blocking saw palmetto, it promotes thicker, fuller, and healthier hair with just one easy weekly application. This serum nourishes deep into the scalp, slows hair shedding, and supports unstoppable regrowth, making it the perfect solution for busy professionals seeking effective, no-fuss hair care.

## Description

RULE No.4 Stem Cell Hair Growth Serum, Natural Oil with Biotin, Castor Oil & DHT Blocker Saw Palmetto for Thicker Fuller Longer Hair Regrowth, Scalp Serum Hair Loss Treatments for Men & Women

## Features

- YES. THERE IS STILL TIME LEFT with Rule’s stem cell powered scalp serum for hair growth and thickening. The revitalizing hair serum for hair loss and unstoppable new confidence gain
- SLOW DOWN HAIR SHEDDING right now. Help reduce further loss and damage with a topical hair growth serum for thinning hair that’s made to stimulate growth at the root for thicker, fuller, healthier and stronger hair
- RESULTS DRIVEN INGREDIENTS, filler free powerful hair thickening serum formula. Promote safe growth with a hair loss serum blend of castor oil, biotin, prohairin, ginkgo, ginseng, saw palmetto extract, plus more
- EASY TO APPLY HAIR GROWTH serum for men or women. No long multi-step, complex hair loss treatment to grow hair here. For best results - use one dropper full of our hair regrowth serum each week, massage into scalp and - done!
- THE SWISS APPLE DIFFERENCE nourishes down deep into the skin past the follicles with gentle, natural stimulating nutrients. Get our hair serum for hair growth to get ahead of hair loss - ADD TO CART

## Product Details

- **Brand:** RULE COSMECEUTICALS
- **Item Form:** Serum
- **Active Ingredients:** Swiss Apples stem cells
- **Age Range (Description):** Adult
- **Hair Type:** All hair types

## Images

![RULE No.4 Stem Cell Hair Growth Serum, Natural Oil with Biotin, Castor Oil & DHT Blocker Saw Palmetto for Thicker Fuller Longer Hair Regrowth, Scalp Serum Hair Loss Treatments for Men & Women - Image 1](https://m.media-amazon.com/images/I/71z1AnCetlL.jpg)

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**Shop now:** [https://www.desertcart.jp/products/596193124-rule-no-4-stem-cell-hair-growth-serum-natural-oil](https://www.desertcart.jp/products/596193124-rule-no-4-stem-cell-hair-growth-serum-natural-oil)

---

*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-07*