Thioglycolic acid corresponding disulfide (2-[(carboxymethyl)disulfanyl]acetic acid or dithiodiglycolic acid): Thioglycolic acid, usually as its dianion, forms complexes with metal ions. Such complexes have been used for the detection of iron, molybdenum, silver, and tin. Thioglycolic acid reacts with diethyl acetylmalonate to form acetylmercaptoacetic acid and diethyl malonate, the reducing agent in conversion of Fe(III) to Fe(II). Scientist David R. Goddard, in the early 1930s, identified TGA as a useful reagent for reducing the disulfide bonds in proteins, including keratin (hair protein), while studying why protease enzymes could not easily digest hair, nails, feathers, and such. He realized that while the disulfide bonds,
Gel nails are still a very recent addition to the nail industry first being introduced in the 1980s. The most popular acrylic nail service is the pink and white which refers to the use of pink colored acrylic and a white acrylic powder to create a long-lasting French manicure look. Just as with gel nails, acrylic nail extensions can be created using forms to create sculpted nails or tips. Forms are special stickers that are placed at the end of each finger, under the finger nail, and secured in place so that wet acrylic can be sculpted into a nail extension at