Hair is up to 42% weaker when wet. Water can cause the cortex to swell, breaking the hydrogen bonds that hold the structure together. This can vary from 13% to 42%, depending on hair type – with curly and coily hair types being more affected. That’s why it’s important to handle hair gently when wet, to avoid snapping strands. #DysonHair #HairScience #HairDamage #HairHealth #HealthyHair