Avoid contact with chemicals: Do not let the brooch come into contact with any irritating chemicals, including perfumes, hair sprays, cosmetics, lotions, soaps, detergents and cleaning products. Chemical substances can darken the luster of crystal, discolor the metal base and loosen the Rhine stone adhesive. Be sure to wear a brooch after applying makeup, perfume and hair care products. Prevent water damage: Do not wear the brooch when taking a shower, bath, swimming or washing your hands. Prolonged contact with water, sweat or moisture can cause metals to lose their luster, fail to bond and crystallize and become cloudy. Take it off before doing any activities related to water. Multicolored crystals and exquisite fireworks designs are fragile. Avoid dropping, hitting or scratching the brooch on hard surfaces. Try to minimize friction with clothes, bags or other jewelry to prevent the crystal from cracking, scratching or falling off. Remove the brooch during intense exercise, physical activity or profuse sweating. Over time, the salt and oil in sweat can corrode metals and damage the luster of the crystals. After each wear, please gently wipe the surface of the brooch with a soft, dry microfiber cloth or jewelry polishing cloth to remove dust, skin oil and light residues. Do not rub roughly to protect the crystal surface. For minor dirt accumulation, dip a small corner of a microfiber cloth in clean warm water, gently pat the affected area, and then immediately dry it thoroughly with the dry part of the cloth. Do not immerse the brooch in any liquid. Do not use ultrasonic cleaners, jewelry cleaning solutions, alcohol or abrasive brushes to clean brooches, as this may damage the crystal coating and metal surface. When not in use, please store the brooch in a cool, dry and dust-free place, such as a sealed jewelry box, velvet bag or lined jewelry tray, etc. Avoid damp environments to prevent the metal from losing its luster and crystal fog. Store it separately from other jewelry to avoid scratches, tangles or pressure that may break the crystal or bend the collar pin buckle. Additional precautions: Use a metal base or clasp to handle the brooch. Do not directly use the crystal/rhinestone part to avoid leaving fingerprint oil and reducing the luster. Regularly check the pin clips to ensure safety. Do not forcibly open or close the snap to avoid damage.