Change your locks. Add a bit of colour to your hair with L’Oreal Professionnel Hairchalk ($25, available at salons). Try throwing a fun colour like pink or red into your hair. If you’re not ready to commit to a bold shade, this washes out after about 2 shampoos, so you can go a little wild without permanent colour. A bit of colour on the lower layers of your hair makes for a trendy surprise.