How-To
Heat Protectant Serum Guide
How to choose and use heat protectant serums for blow-drying, flat-ironing, and curling.
Start here
Most “serum does not work” complaints are dose or placement problems. Begin with how to apply hair serum, then open a hair-type hub like straight hair serums or curly hair serums when you are ready to pick a formula.
Amount by hair type
| Hair type | Starting amount | Next ranked guide |
|---|---|---|
| Straight / fine | 1–3 drops | Shine for straight hair |
| Curly | Pea to dime, sectioned | Frizz for curly hair |
| Coily 4C | Dime emulsion per section | Frizz for coily 4C |
| Heat styling days | Protectant mist/serum first | Heat protectant how-to |
How-To
How Much Serum to Use
Find the right serum amount for your hair length, density, and texture without buildup.
How-To
Layering Serums With Other Products
How to layer hair serums with conditioner, oil, cream, and gel without buildup.
How-To
Overnight Serum Treatments
How to use hair serums overnight for repair, growth, and deep hydration safely.
How-To
How to Apply Hair Serum (Step-by-Step)
Apply hair serum the right way — damp vs dry, amount by hair type, and mistakes that cause grease.
How-To
Leave-In vs Rinse-Out Serums
Leave-in vs rinse-out hair serums compared — when to use each and what results to expect.
How-To
Serum Before or After Oil?
The correct order for serum and oil — layering rules for moisture, shine, and frizz control.
How-To
How to Apply Scalp Serum
Correct scalp serum technique for growth, thinning, and scalp health — step by step.