I started making archery arm guards, Tandy's Antique Gel for color and finished with my own beeswax based recipe. This wax mix has worked great for everything i have done. A friend was wearing an arm guard he ordered from me, and due to heat and sweat, stain started rubbing off on the part against his skin. What can i finish the backside (part that touches the arm) to prevent the color from running? I think i still want to use my wax mix on the front, but the backside needs something durable.