6g of MB (dark greenish crystalline) powder. Each jar contains 1.0g of powder exactly. The MB product is as safe as other products.
MUST be diluted. To prepare 1% methylene blue solution, add 1 gram of powder to 100 ml (3.38 fl oz.) of water. You may raise the concentration of soulution by 20% to promte its efficacy.
Third-party tested, No formaldehyde / heavy metal. CAS: 7220-79-3. Store at room temperature.
NOTICE: Please operate with gloves as it has strong dyeing effect. Keep out of reach of children.