Q:
Transmutation charges for unused skins
A:
How do I unlock skins with the Wardrobe system?
Equipping, salvaging, or destroying a piece of gear or a skin will add the skin to your Wardrobe if you have not already unlocked it. You can also right-click the item and select “Unlock Skin” as well. This option will be greyed out and not selectable if the skin is already unlocked in your Wardrobe.
https://help.guildwars2.com/entries/46419166-Wardrobe
Your skin will not be destroyed or unlocked until you take some action.
That does explain better than the blog post.
Thank you
My pleasure. =)