Dr Hauschka Neem Oil (£25, drhauschka.co.uk)
Pregnancy and breastfeeding can zap nutrients from your hair, as can neglecting a regular hair routine, but this oil works wonders on dry, damaged hair and irritated scalps. Apply from roots to tips (massaging into your scalp too) before bed, twist hair up into a bun and wash out the next morning. It's pretty greasy stuff, so make sure you're able to wash it the next day, but after just one application, your hair will be transformed. Plus, stimulating microcirculation of the scalp, you’ll promote healthier hair over time too.