Describe Shelf life:3 years 1. Disposable design for hygiene and safety, avoiding cross-contamination and ensuring cleanliness and peace of mind with each use. 2. Tattoo needle tip cleaning cup specially designed for tattoo artists; its moisture-absorbing and color-changing function quickly identifies the level of cleanliness, improving work efficiency. 3. High-precision cup design for easy application of cleaning solution, precise operation without spillage, suitable for use with various tattoo equipment. 4. Made of high-quality environmentally friendly materials, wear-resistant and corrosion-resistant, ensuring continuous stable performance during the tattooing process. 5. Multi-functional cleaning tool set to meet pre- and post-tattoo cleaning and disinfection needs, supporting standardized operations in professional tattoo studios. Precautions: 1. Keep out of reach of children to prevent accidental ingestion. 2. If you feel unwell, stop using immediately. 3. Do not use on damaged or swollen skin. 4. Store in a cool and dry place. 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