Living Proof Perfect Hair Day (PhD) Heat Styling Spray
What it does. • Smoothness for up to 48 hours • Heat protection up to 450°F / 230°C • Ultra-fine mist
- Heat protection up to
- 48-hour smoothness
- Works on damp or dry hair
- Even application with ultra-fine mist
Pro Tip
Hold 6-10 inches away and apply in sections for even coverage, then finish with a final mist after styling for extra smoothness.
• Hold canister 6-10" away from damp or dry hair. • Section and apply in a sweeping motion throughout hair. • Style with a heat tool. • Finish with a final spray for extra smoothness and shine.
Key Ingredients
- Alcohol Denat (fast-drying)
- Polyquaternium-16 (heat protection)
- Sunflower Seed Oil Glycerides (smoothing)
- Dioleoylethyl Hydroxyethylmonium Methosulfate (conditioning)
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 | $36.78 | $36.78 | $36.78 |
| First Order | 10% off | — | — |
| 10% Back as GLOW Bucks | 10% back ($3.68) | 3% ($1.10) | — |
| Your Value | $33.10 | $35.68 | $36.78 |
| 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.






