Got a beauty dilemma? Our expert is here to offer advice. This week, Fiona has emailed about therapy for thinning hair

LED face masks use light to activate cells and improve skin condition. This technology has now been applied to hair growth, but does it actually work?

Zoe Passam, senior consultant trichologist at Philip Kingsley, says the type of light therapy used for hair loss is called LLLT, low level light therapy, most often used for male- and female-pattern hair thinning: “It is believed to work by metabolic stimulation of cells to increase the numbers of actively growing anagen follicles.”