Intense RX Repair Serum
What it does. • Reconstructs frayed cuticles and brittle en
- Strengthens and repairs damaged hair
- Adds brilliant shine and smoothness
Pro Tip
Layer this serum under your heat protectant before blow-drying for double the defense—the keratin fills in damaged cuticles while you style, creating a smoother surface that reflects more light. For extra repair on really fried ends, apply at night and braid hair loosely to let it work overnight.
Apply a small amount to clean, damp hair. Distribute evenly from mid-shaft to ends. Style as desired. Can also be applied to dry hair for added shine.
Key Ingredients
- Keratin
Free shipping on orders $150+
Orders ship within 1–2 business days. Standard delivery takes 2–5 business days.
30-day returns
Unopened products in original packaging may be returned within 30 days. Customer is responsible for return shipping.
100% authentic
Every product is sourced directly from authorized distributors. Professional-grade, guaranteed genuine.
| Studio 1 Beauty | Ulta | Amazon | |
|---|---|---|---|
| Retail Price | $39.14 | $39.14 | $39.14 |
| First Order | 10% off | — | — |
| 10% Back as GLOW Bucks | 10% back ($3.91) | 3% ($1.17) | — |
| Your Value | $35.23 | $37.97 | $39.14 |
| Free Shipping | Over $150 | Over $35 | Free (Prime) |
| Returns | 30 days | 60 days | 30 days |
| Personalized for You | ✓ | — | — |
First order: 10% off + 10% back with GLOW Bucks (free to join). Every order after: 10% back as GLOW Bucks — real dollars you can redeem at checkout, never expire.






