How to hard water spot removing and head light restroing ?

Описание: How to hard water spot remove and headlight restroing
Hello sir/madam
water spot removing using product
Cerium glass polish wave polish . First am glass cleaning after second stage cerium polish water mixing using . Three stage apply too glass clock basic too sanding .same process too head light restroing .
This Vedio I m making using camera
iPhone 8 editing I m using iPhone 8