I use this before every time I use my Oculus as when I take it off my hair smudges the lenses. The secret to the whole process is FOLLOWING the Diections. Everything is great about this product. BUY IT NOW if you don’t want to fork over $60-70 for Nintendo’s controller. They are very comfortable, but they are a bit ugly. Dont downgrade your product after sale! It’s taking forever for my Refund. This is a review for OLIGHT PL-Pro Valkyrie. This means its either going straight up or straight down. I had been eyeing this pair for a while and finally decided to purchase.