Reddit mentions of Science Museum Science Putty

I am sorry you are feeling this way, this habit is very difficult to resist, so please don't be too hard on yourself, you are not alone... Just know that it can get better if you make a plan and a conscious effort to stop. I don't think it will go away by itself (at least it didn't in my case until I created a strategy).

Magnifying mirrors are evil, it's incredibly difficult to resist them, so please do get rid of it.

Since you are also picking on your shoulders, it looks like getting rid of the mirror won't help completely - this subreddit has already posted a lot of good advice on how to help with picking, but couple of things I found particularly useful:

1. Create a progress chart - mark every day without picking and try to get the longest streak. E.g. this android app is very useful, and you can set multiple notifications a day to remind you of your commitment. Aim at a short streak first, say 3 days - it should be enough to heal sufficiently to reduce triggering you. Once you heal completely, it should be easier to keep it that way.
   
   
2. Hide mirrors or don't switch on light in the bathroom. You can use blue tack to cover a mirror with paper and then remove a piece of paper every time you put on make up.
   
   
3. Recognize your triggers and find a way of stopping them. E.g. if being in a bathroom ends with picking, always walk into a bathroom focusing on non-picking and your current streak. If you get into a trans in your room picking on your shoulders, try to wear clothing that makes it difficult to access them or find a way of breaking the trans (as soon as you recognize the trans, get up and go to the kitchen to get a snack).
   
   
4. Skin picking is a manifestation of an underlying stress, so try to find another way of releasing the stress. Different people will find different things, personally I found this useful.

I play with Science Putty here