1. Heat Transfer: The flat iron's hot plates transfer heat to the hair shaft, breaking the hydrogen bonds that hold the hair's natural shape.
2. Hair Cuticle Changes: The high heat causes the hair cuticle (the outermost layer) to open up and flatten. This makes the hair appear smoother and shinier.
3. Hair Shape Alteration: The heat and pressure from the flat iron straighten the hair shaft, changing its shape and removing natural waves, curls, or frizz.
4. Potential Damage: While it can create a sleek look, flat ironing can also cause damage to your hair, especially if done excessively or with improper technique. This damage can include:
* Heat damage: The high heat can weaken the hair, leading to breakage, dryness, and split ends.
* Frizz: Although it temporarily smooths the hair, frequent flat ironing can actually increase frizz over time as it weakens the hair's structure.
* Color fading: If you have colored hair, the heat can cause the color to fade faster.
To minimize damage:
* Use a heat protectant spray: Apply a heat protectant before flat ironing to create a barrier between the hot iron and your hair.
* Lower heat settings: Use the lowest possible temperature setting that effectively straightens your hair.
* Avoid multiple passes: Try to straighten your hair in one or two passes with the iron to minimize heat exposure.
* Use a high-quality flat iron: Look for irons with ceramic or tourmaline plates, as these distribute heat more evenly and cause less damage.
* Don't flat iron wet hair: Always ensure your hair is completely dry before using a flat iron to avoid causing damage.
Remember that flat ironing is a styling technique, not a way to permanently alter your hair texture. If you want a straighter look without the potential for damage, consider alternatives like blow drying with a round brush or trying different hairstyles that embrace your natural hair texture.