Describe Shelf life:3 years 1. Double-headed design, ultra-fine triangular pen core accurately outlines the eyebrow shape, and the ultra-fine brushstrokes are suitable for men to create a natural three-dimensional eyebrow effect. 2. Waterproof and sweat-proof formula, long-lasting and non-fading, maintain perfect eyebrow shape all day long, no fear of exercise or sweating scenes. 3. Unique non-smudge technology ensures long-lasting and stable makeup effect, easily cope with various outdoor activities or long-term wear needs. 4. Soft tones designed specifically for men, naturally fit the skin tone, modify the eyebrow shape while avoiding excessive makeup marks. 5. Easy to use, novice-friendly, whether it is daily care or special occasions, you can quickly shape the ideal eyebrow shape. Comment: 1. The manual measurement tolerance is 2-5g, please do not mind your replacement 2. Due to differences in different displays, the images may not reflect the actual color of the product. Thank you very much