How to do it:

step 1:Wash your hands and clean your controller
step 2:Remove the button parts from the skins.(You can use your fingernail or something else instead)
step 3:Paste to your controller button and your console be careful. And then use a hair dryer to slight warming it, And use a hard card to squeeze it . Wait aout 3 hours before you use it, should be better.
You can repeat the operation manyl times,If the viscosity decreases, use a hair dryer to soften, It can restore.