YSL Touche Eclat Radiant Touche No.3 Pen Brush. The award-winning Yves Saint Laurent Touche Eclat Radiant Touche No.3 pen brush is perfect for banishing under eye shadows and hiding signs of fatigue around the mouth and nose. YSL Touche Eclat is a top end product at a stunning price and shade No.3 is suitable for olive/bronzed skin. The iconic gold case slips easily into any bag or pocket so you're always at your best wherever you go.