How do YOU Know When a Product Doesn't Suit You?

Because I'm such a good Beaut.ie, I'm always testing and trialling new products with a view to telling yiz all about them (all, er, except the final mascara trial. I, eh, didn't get a chance to test it ... sorry!).

But not everything suits me, even though I do seem to have the skin of a rhino. I don't suffer from sensitivities, so products don't cause blotches, rashes or reactions. Instead what generally occurs is a crocodiling of my hide. I have really dry skin and so a product will live and die by its ability to keep moisture in my phizog, or miracle of miracles, give me even more hydration.

If something's not right for me, a horrid scaly patch appears right under my chin. It's gross! But that's the indicator for me that what I'm using needs to be binned, pronto.

What about you? Do you swell up like a pufferfish? Perhaps it's polka dots that appear on your noggin or a red rash across your nose? Dish all in the comments!