SERUM TO BOOST EYEBROWS
raPiDBrOw eyebrow enhancing serum, 3ml, £37, boots.com
CLAIM: This contains a ‘potent’ mix of compounds to restore eyebrow hairs. These include keratin, biotin, vitamin B5 and apple extract. Brush it through your brows twice a day for at least two months.
EXPERT VERDICT: ‘This makes “visibly looking thicker” brows simply because it physically plumps them up when applied, rather than actually growing more hair,’ says Iain Sallis. ‘But there is no independent research to back up the mixture of proteins and vitamins here. There are only studies conducted by the maker which found less sparse-looking eyebrows in 60 days. It’s expensive, too, and I suspect it won’t have a huge effect.’