KeraCare Edger Edge Tamer 2.3 oz Temporarily Straightens & Smooths Unruly Hairlines. A non-greasy gel that straightens and lays down edges along the hairline. This flake-free product creates a silky-smooth touchable texture while giving a lasting hold free of sudden reversion. When to Use Use on natural or relaxed hair to smooth and refine hair along tapered areas and the hairline. How to Use Apply a small amount along hairline. Using slight pressure, repetitively smooth down hair onto scalp using fingertips and/or a comb until hair is silky straight. For a stronger hold, apply more product as needed. NOTE: The next morning, hair can be safely combed or brushed back down into place without breaking off.