Some people like to use the scotch tape method where you take a piece of tape, tap it on something to dull the stickiness a tad, and attempt to remove the eye cap with the tape (via gentle application, to the eye, and lifting it off. Repeating if necessary).
Not my favored method but it can work.
Another option is soaking the snake.
Doing this by placing the snake in a covered plastic tub that has plenty of wads of plain (non-patterned) paper towels, in it, and is also 1/3, to half, filled with warm water (warm, not hot ... something akin to a little above lukewarm).
Along with the water, humidity will also build up in the air portion of the tub.
For the soak:
- Leave the snake, in the tub, for 30 min., so that his/her unshed skin will become soft/moist & loosen up.
- If tub has no air holes, allow some air in, by quickly lifting lid part way (and then closing, of course), every 10-15 min. or so.
- If water starts to get cold, empty some of it and replace with warm water (circulate water, with your hand, so that all water becomes warm and there are no cool spots)..
- If the snake defecates, in the tub, change out the water and paper towels.
- Check on snake (while it is in tub) periodically, & without lifting the lid, to ensure that the snake is doing well.
- Once approx. 30 min. have gone by, manually check the snake (if he/she has not, already, removed the skin, & eye caps, on his/her own) to see if the skin is loose enough for manual removal. If not, close the tub lid and leave the snake, in there, for awhile longer.
It should, eventually, get to a point where the skin does, & eye caps do, become moist/soft/loose enough for manual removal. Do this (removing the skin) with wet paper towel/s (mostly from front to back).
- Take extra care with the eyes. If eye caps do not come right off, gently rub a wet paper towel over the eye/s, repeatedly, until the cap/s does/do come off. Starting from just outside the eye and going over the entire eye to the other side of it.
Another option, when it just involves the head &/or eye caps, is a "manual soaking".
Doing this by holding the snake, itself, and wet (with warm water) paper towel/s around the head/eyes. Making sure to not block its nostrils.
Re-wetting the paper towel/s, with warm water, as needed.
This takes a little time, and some patience, while you hold the snake.
Skin & eye cap removal is the same method as used for after soaking in a tub.