Larger | Spin | 3D. Indium foil. Indium is often used to form air-tight seals between glass components because it is soft enough to mold itself to the shape of the glass, and because unlike rubber or other organic seal materials it is really 100% gas-tight and it doesn't release volatile compounds of its own.
Melasma is a chronic skin disorder that results in symmetrical, blotchy, brownish facial pigmentation. It can lead to considerable embarrassment and distress. This form of facial pigmentation is sometimes called chloasma, but as this means green skin, the term melasma (brown skin) is preferred.
Treating Melasma with Non-Prescription Home Treatment. 1  1. Protect your skin from the sun. Apply broad spectrum sunscreen and take other measures to protect your skin from the sun. 2  2. Calm down. Stress can worsen hormonal imbalances, and if a hormonal imbalance is the cause of your melasma, finding ways to stress less can help treat your melasma.