Opening Act has the best function and retention in higher humidity environments while reducing time spent on touch-ups. This adhesive works best in humidity between 55%-65% and temperature 69-72 degrees. Opening Act Adhesive is recommended for beginner and intermediate lash artists that work in moderate to high humidity. This adhesive works best in humidity between 30%-70% and temperature between 69-72 °F. Recommended humidity and temperature for optimum results: 55%-60% humidity and 70-72°F. For low to moderate humidity, incorporate Glue Aid to help speed up dry time. For dry climates or during winter, a professional humidifier may be required.