It works like this: thread by thread technicians apply the synthetic, polyester-based extensions to each tiny lash (up to 120 an eye) leaving clients the look of full eye-make up.

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Mr Holt was eventually handcuffed with his hands kept behind his back and brought up to an armchair - face down - so he could not lash out again.

BBC: Pc Neil Bowdery (left) and Pc Maurice Leigh