I’d try the wet , textured towel trick !!

( without the soak initially)

Stubborn shed / retained eye caps
For real stubborn shed skin and indeed retained eye caps -the best way I found over the years is a 20 minute soak , then have a wet or very damp rough textured towel ready and gently wrap the snake in the towel .. then whilst it wriggles continually inside the towel you apply very gentle pressure to the stubborn areas on the snake ...
You may get a little wet yourself but this method ( done properly) rarely fails to be honest


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