Seborrhea or seborrheic dermatitis is a skin disorder in which the sebaceous glands of the skin produce an excessive amount of sebum. Seborrhea typically affects the back, face and flanks causing scaly, flaky, itchy, red skin.
Desoldering braid, also known as desoldering wick or solder wick, is finely braided 18 to 42 AWG copper wire coated with rosin flux, usually supplied on a roll. The end of a length of braid is placed over the soldered connections of a component being removed.
Soldering wire is made from an alloy of tin and lead. Typically, it  is 60% tin, and 40% lead. Soft solder is made of an alloy of tin and lead. Hard solders (for jewelry work) a usually made mainly our of the metal being worked (e.g. silver).oldering wire is made from an alloy of tin and lead. Typically, it  is 60% tin, and 40% lead. Soft solder is made of an alloy of tin and lead. Hard solders (for jewelry work) a usually made mainly our of the metal being worked (e.g. silver).