Modifiers matching skin:

• developing,
• luxurious,
• sensitive,
• thin,
• dark,
• elastic,
• dry,
• thick,
• underlying,
• exposed,
• delicate,
• exotic,
• supple,
• precious,
• dead,
• movable,
• soft,
• planar,
• raw,
• outer,
• embedded,
• hairless,
• moist,
• protective,
• pliable,
• facial,
• calloused,
• tender,
• under,
• smooth,
• hairy,

Simple categories matching supple:

• leather,
• part,
• material,
• fiber,
• fabric,
• skin,