Pink Tongue Skinks are small relatives of Blue Tongue Skinks. They reach lengths of approximately 15″ (roughly half their length is in their tail) and are semi-arboreal. In nature they live in warm temperate, subtropical forest areas without extremes (near coastal), eating snails and slugs as their primary diet.

Housing-

The larger the better, with floor size being more important than height. However Pink Tongue Skinks will use every inch of the cage so you will be rewarded by providing as tall a cage as you can find.   Multiple skinks can be house together with no issue.

Temperatures-

Allow a temperature gradient from a cold side of roughly no less than 55 degrees to a warm side of roughly no more than 75 degrees. A basking spot of 85 degrees is beneficial.   Be mindful of these temperature guidelines and you will be rewarded with active animals that will burrow and climb throughout the day.  They will be affected by both basking temperatures and ground temperatures, requiring attention to detail.   A light producing bulb is not required if the room provides ambient light for a day/night cycle, nor is UVB required. However Pink Tongue Skinks will bask under a heat lamp.

Substrate-

Coconut Husk is the ideal substrate in my experience. It holds moisture well and resists mold and odor. You do not need it to be much deeper than the approximate height of your skink.

Cage Decorations-

Plenty of hiding and climbing spots should be provided. Be mindful that Pink Tongue Skinks are extremely maneuverable and make excellent escape artists. Secure the top of the cage well.
Food and water bowls should be heavy enough and tall enough to not allow burrowing underneith nor allow substrate to cause contamination.

Diet, Nutrition, and Eating Habits-

Always provide water, however Pink Tongue Skinks will drink most often when you mist the cage. Mist the cage daily. This also seems to promote a feeding response in the skinks.   Food can be provided every 2-3 days. I suggest a high protein, low fat diet of varied sources. Snails (escargot is an easy source), minced meat, and occassionally commercial foods may be offered.   Snails are the primary natural food source of Pink Tongue Skinks. 

The nutrient composition of raw snails (per 100 grams of edible portion), according to information from the nutrient databank of France, is:

Energy (kcal): 80.5
Water (g): 79
Protein (g): 16
Available carbohydrates (g): 2
Fibres (g): 0
Fat (g): 1
Magnesium (mg): 250
Calcium (mg): 170
Iron (mg): 3.5
Vitamin C (mg): 0

Always try to replicate this ratio of nutrients. Provide high quality reptile vitamin/mineral supplements periodically as well.