Brand new from Korres, the Guava Lip Butter (£6) is already a firm favourite (we've been testing them since mid-December). They're enriched with shea butter and rice wax and free from nasties like mineral oil and ethanolamine. It’s a healthier option for keeping lips in tip-top condition through harsh, cold outdoor weather and bone-dry heated houses during the winter. And with stars like Charlize Theron and Goldie Hawn counted as fans of the original Guava Body Butter, we’re sure this is going to be a similarly addictive treat. We like the Wild Rose lip butter too (has a very subtle and flattering red tint).