Veronika, it's going to depend on the weight -
From Jim Humble's newest book
For children other than babies, use one drop of MMS for each 25 pounds (11.4 kg) of body weight per hour as the maximum dose, but start with one drop per hour.
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General Procedural Information
The protocol for children is essentially the same as for adults but uses smaller amounts. If the child is very sick, start at half a drop or less per hour. To make a half-drop dose, make a one-drop dose and pour out half before giving it to the child. Then increase from 1 to 2 or 3 drops as directed in Protocol 1000, but:
• Do not go beyond one drop for each 25 pounds (11.4 kg) of body weight per hour.
Do not increase the dosage to more than half a drop for a baby per hour. If the baby or child becomes nauseous, make the doses smaller. Give smaller doses until the baby or child can tolerate more, but do not stop administering doses except in cases of extreme nausea or diarrhea. In those cases, wait until the diarrhea or nausea has passed before continuing with smaller doses.
take in mind also his skin protocol on pages 107 and 108
Skin Problems
I have been having many people make up spray bottles of MMS, since I myself have been doing this for several years now. I use 20 drops of MMS and 20 drops of a 50% citric acid solution, wait 20 seconds, and then add 2 ounces of water. It’s most convenient to use a 2-ounce spray bottle bought from a pharmacy. Just put the drops in the spray bottle, wait 20 seconds, and fill it with water. If you have only a 10% citric acid solution, mix 20 drops of MMS with 100 drops of citric acid and wait three minutes.
With a lid on the container, this skin spray will last 5 to 6 days and longer before losing its potency. I have sprayed my skin every day for more than 3 years, and sometimes two or three times a day with this 20-drop dose. I have sprayed all the delicate areas of my body, but have kept several areas unsprayed, so that I can compare them with the sprayed areas.
After a year, there was no difference in sprayed areas compared to unsprayed areas. That shows that MMS has no effect on body cells, just as the chemical theory predicts. It only kills pathogens on the body cells; it does not affect the body cells themselves. Of course, we need lots of research in this and other areas. Millions of dollars of MMS research is needed, but I have been using it for more than 10 years and it has helped hundreds of thousands of people.
In addition to conducting the above test, I have used this 20-drop dose for spraying various problems on the skin, on both adults and children, including babies.
• If you spray it on a child or adult and it stings, immediately rinse it off with clean water; however, I have never had that problem. If it stings, there is some sort of a problem that needs handling. You may have to use Aztec Clay if MMS is stinging badly (see below).
I have also used this solution for spraying skin cancers, including melanomas. Although all cancers do not react the same way, I have seen cancer tumors as big as an orange dry up and fall off piece by piece. In one such case, I sprayed the cancer every hour, leaving the solution to dry in place, and then rinsed it all off once a day.
In rare instances, someone has sprayed a skin rash and immediately felt a burning sensation and the condition has worsened. This may happen when the rash is the result of a body fungus. See Body Fungus below.
If you use a clear spray bottle, you can see when it loses its power, as chlorine dioxide is yellow in solution and the solution will slowly turn water color. When you notice the solution less yellow that it has been, it’s time to dump it out and make some fresh solution.
