Veet and Nair can cause pain if your skin is sensitive. My sister can't use it because it causes a lot of pain for her and occasionally turns her skin red. I have used it in the past and only had mild irritation so I switched the Sensitive Skin formula and only kept it on for the allotted time. It helped a lot and was no longer irritating my skin. I no longer use it for obvious reasons, but I'd say try the Sensitive Skin formula or maybe not use it at all.