Physical sunscreen, which is applied to the face, should also be considered for those with an allergic reaction to certain ingredients.

The World Health Organization (WHO) has identified the following ingredients in sunscreen as potentially hazardous to human health: titanium dioxide, titanium dioxide emulsifier, titanium oxide, titanium hydroxide, titanium sulfate, titanium iodide, ferric chloride, zinc oxide, and magnesium stearate.

If you are allergic to any of these ingredients, you should stop using sunscreen.

For those with a reaction to titanium dioxide or titanium oxide , a daily dose of 1,000 milligrams (mg) of titanium dioxide is recommended.

For titanium hydrazine , a dose of 200 milligram (mg), or 1,500 mg, of titanium hydrosulfate is recommended every two hours for at least 10 days.

For ferric calcium , a 150 milligrain (mg)-dose is recommended, or 1.2 mg of ferric carbonate every 12 hours.

For magnesium stEARATE, a 400 milligrawel (mg)* every 24 hours is recommended for at most 2 weeks.

For calcium hydroxidesulfate, a 600 mg dose every four hours is also recommended.

As for the other ingredients in these sunscreen ingredients, a daily intake of 100 mg (mg)/kg body weight is recommended if you are taking at least 100 mg of any one of these components every day.

It is recommended that you stop using these ingredients once you are no longer allergic to them.

Physical sunscreen should be used only if you have not experienced symptoms of an allergic response.

If the reaction has resolved or your skin is still sensitive to these ingredients but your symptoms have diminished or gone away, then a daily application of a daily 500 mg ( mg) of vitamin C is recommended instead of daily application for the following 10 days (i.e., for the 10 days before you stop the use of sunscreen).

For people who are allergic or have a reaction, it is also important to monitor their blood pressure and monitor the effects of physical sunscreen.

If physical sunscreen causes an increase in blood pressure, this may be a sign of an underlying condition, or a side effect of physical sun protection.

For people with diabetes, physical sunscreen may increase blood pressure.

Physical sun protection is also needed for people who have other medical conditions.