This patient support community is for questions related to juvenile diabetes including celiac disease, depression, diabetic complications, hyperglycemia / diabetic keto-acidosis, hypoglycemia, islet cell transplantation, nutritional issues, parenting a diabetic child, pregnancy, pump therapy, school issues, and teens with diabetes.
SS is right that we can't "absorb" sugar thru our skin. The sugar and other carbos we eat get digested and -- eventually -- converted into glucose that's in our blood and nourishes our cells. We can't digest thru our skin so what's on the skin isn't being converted into glucose.
I have used "sugaring" ... and make my own mixture of sugar, water & lemon ... to remove unwanted hair. The caution for diabetics is that there is trauma to the skin that endures waxing or sugaring and if someone has neuropathy and cannot feel heat or pain, they could do severe damage to their skin. Spa personnel might be very well trained or they might inadvertantly cause some harm.
Check with your endocrinologist before going further. S/He will be able to guide you -- based on your particulars -- whether waxing or sugaring would be a reasonable risk for you to take. If yuo get the green light, you might seek out a middle-eastern woman who can show you how to make your own mixture (costs pennies for many months' supply) and how to safely do the technique.