[Value Pack] Methylene blue (MB) is a traditional mitochondrial-targeting antioxidant. 6 grams of ultra high purity methylene blue (USP grade 99.7+%) that should be diluted for further use. You may raise the concentration of soulution by 20% to promte its efficacy. No formaldehyde / heavy metal. Store at room temperature. MSDS report available upon request. CAS: 122965-43-9, 7220-79-3. NOTICE: Please operate with gloves as it has strong dyeing effect.