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.
The combination of banana and guava is one of the potent treatments for melasma as well. The compound lycopene present in guava is useful for lightening blemishes and hyperpigmentation. This fruit pack also helps in exfoliating the skin and removing dead skin cells. Mash 1 guava and 1 banana to form a thick paste.