1. Try to up the humidity in the cage by adding an extra water bowl or misting the cage periodically.
2. Give the snake a moist hide box filled with some type of moist medium (I use old sherbet or cool-whip containers and moistened papertowels). Keep the moist hide box in the cage all the time, not just during shed cycles and make sure to keep it moist, because eventually the medium will dry out.
3. Give the snake a soak in shallow (1/2 deep) luke warm water (for about a half hour) to try to loosen the stuck skin.
4. Take it to a good herp vet.
5. If you don't take it to a vet (which you should), at least apply some Neosporin on the tail tip to try to prevent infection.
The tail is turning black because there is shed skin still stuck to it and the tail is being constricted. There is no blood flow to the tail tip and eventually it will fall off because the tissue is becoming necrotic. I had this happen to my first snake as well. Fortunately he only lost the last 3-4 millimeters.
The only way to keep this from happening over and over is to raise the humidity. Make sure your friend gets a humidity gauge and that the humidity stays around 50-70%
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alstiver@hotmail.com
Current snakes:
1.0 '01 Hypo snow cornsnake (Tesla Coil)
0.1 '02 Ghost (pastel) cornsnake (Banshee)
1.1 '02 Bloodred cornsnakes (Desi and Luci Too)
To be added in February:
0.1 '98 Het Hypo, Het Caramel cornsnake
1.0 '00 Hypo Het Caramel cornsnake