* Hairspray doesn't actually "lock in" the straightness. Hairspray primarily works by creating a thin, flexible film that holds the hair in place. It doesn't change the structure of your hair or make it permanently straight.
* Heat damage. Applying hairspray before straightening can actually cause more heat damage to your hair. The hairspray creates a barrier that prevents the heat from penetrating evenly, leading to hot spots and potential damage.
* Stiffness and buildup. Hairspray can make your hair feel stiff and unnatural, especially if you use too much. It can also lead to product buildup over time, making your hair appear dull and lifeless.
Here's a better approach:
1. Prep your hair properly: Start with clean, dry hair. You can use a heat protectant spray to shield your hair from damage.
2. Straighten strategically: Use a high-quality flat iron and work in small sections to ensure even heat distribution.
3. Finish with hairspray: After straightening, use a light mist of hairspray to hold the style in place.
Key takeaway: Focus on proper hair preparation and straightening technique for longer-lasting straight styles, and use hairspray strategically as a finishing touch to add hold and shine.