Haircare fans have been raving about a pack of premium thickening fibres that give natural looking coverage to thinning or fine hair in super quick time. The Nanogen hair fibres are available in a variety of shades at Amazon - and they're currently on sale in certain colours. The fibres don't just count Amazon shoppers among their fans either, as Robbie Williams has also been spotted using the product in a post shared by wife Ayda on Instagram. Normally retailing for £29.95 in a dark brown

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