It depends on the concentration you want
Community protocols commonly describe daily application to clean, dry scalp typically at night to maximize contact time
They also run a catering company called Ink & Knives Catering under which banner they operate and manage the kitchens of Cafe Dori (A unit of Nappa Dori) in Chattarpur
Delfs TM, Baars S, Fock C, Schumacher M, Olcese J, Zimmermann RC
Glutathione 100 mg/ml Nasal Spray Nasal Spray: Instill one spray in each nostril one to two times daily
However, some rare side effects of too much vitamin B12 can include: Headache Weakness Nausea Diarrhea Tingling sensations in the hands and feet Allergic reactions or skin rash (uncommon) When To Seek Medical Advice Risk of vitamin B12 deficiency: Groups at a higher risk of vitamin B12 deficiency include older adults, people who only eat plant-based foods (vegans and vegetarians), and those with certain chronic conditions (gastrointestinal disorders that can affect vitamin absorption)