One of the strongest skin-safe acrylic adhesives on the market, Sunshine Skin Safe Maximum Wear Acrylic Adhesive is a clear, maximum-wear adhesive that provides a solid three-to-five-week bond. 

• Flammable
• Base: Acrylic 
• Skin Safe
• Hold: Maximum Wear (3-5 weeks)
• Comparable: Walker's Ultra Hold®

Directions: 

Step 1: Prepare the scalp with 99% alcohol. 
Step 2: Use the brush to apply a thin, even coat to scalp, and blow dry until tacky. 
Step 3: Repeat once more, then press hair system onto scalp, firmly holding for 10 seconds.