Hydroquinone is a compound commonly used in the cosmetic industry to lighten dark spots on the skin. The word hydroquinone is spelled with phonetic symbols such as /haɪdrəʊkwɪnəʊn/. The first syllable, "hyd-ro," is pronounced with a long "i" sound, and the second syllable, "qui," is pronounced with a short "i" sound. Finally, the word ends with the "-none" suffix, which is pronounced with a long "o" sound. This word can be tricky to spell, but understanding its phonetic transcription can help you remember its correct spelling.
Hydroquinone is a chemical compound primarily used in cosmetic and medical products for its skin-lightening properties. It is a white crystalline solid that is soluble in water and has a characteristic odor. It has the molecular formula C6H6O2 and is classified as a phenol derivative.
In the cosmetic industry, hydroquinone is commonly found in skin bleaching creams, lotions, and soaps. It is used to lighten skin by inhibiting the production of melanin, the pigment responsible for skin color. By reducing the amount of melanin produced, hydroquinone can help fade dark spots, age spots, and hyperpigmentation, resulting in a more even skin tone.
Hydroquinone is also used in medical settings to treat certain skin conditions, such as melasma and post-inflammatory hyperpigmentation. It is applied topically in a variety of formulations, including creams, gels, and solutions, under the supervision of a healthcare professional.
While hydroquinone is generally considered safe when used as directed, excessive or prolonged use can lead to side effects such as skin sensitization, redness, and irritation. In some cases, it may also cause a condition called ochronosis, characterized by blue-black discoloration and thickening of the skin.
Due to its potential risks, the use of hydroquinone is regulated in some countries, and its concentration in cosmetic products may be limited. It is important to use hydroquinone-containing products as instructed and consult with a healthcare professional before using them.
Hydroquinol, hydrochinone, quinol, an isomer of resorcinol; a reduction product of quinone by sulphurous acid; occurs in colorless crystals soluble in 17 parts of water; has been employed as an antipyretic in doses of gr. 5-10 (0.3-0.6), and also externally as an antiseptic; used in photography as a developer.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
The word "Hydroquinone" has its etymology rooted in the Greek language. It is derived from the combination of two Greek words: "hydro" (ὕδωρ), meaning "water", and "quinone" (κινώνη), which refers to a chemical compound.