By Terry combines science and glamour

Terry de Gunzburg, the creator of YSL’s iconic product and the founder of By Terry, captured at home.

Terry de Gunzburg, touted as the guru of colour, is still raring to go.

IT WAS a product that revolutionised the beauty industry when it was launched in 1991. But Yves Saint Laurent’s Touche Éclat – the brush-on concealer-highlighter coveted by celebrities and make-up artists the world over – would not have existed without French woman Terry de Gunzburg.