Heat your lashes to a curl! it's no secret that curling your lashes will give you a wider-eyed, youthful appearance that truly accentuates the beauty of the eyes. However, conventional skin-pinching curlers clamp, dent and use excessive pressure that can damage or even break your lashes. Nothing is better than heat to set a long lasting curl. Heat is used to curl the hair on your head- the same principal applies to your lashes.