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2. Quaternary ammonium cation - Wikipedia

   en.wikipedia.org/wiki/Quaternary_ammonium_cation

   Also, the R groups may be connected. In organic chemistry, quaternary ammonium cations, also known as quats, are positively-charged polyatomic ions of the structure [NR4]+, where R is an alkyl group, an aryl group [1] or organyl group. Unlike the ammonium ion (NH+ 4) and the primary, secondary, or tertiary ammonium cations, the quaternary ...

3. Human hair color - Wikipedia

   en.wikipedia.org/wiki/Human_hair_color

   A variety of human hair colors; from top left, clockwise: black, brown, blonde, white, red. Human hair color is the pigmentation of human hair follicles and shafts due to two types of melanin: eumelanin and pheomelanin. Generally, the more melanin present, the darker the hair. Its tone depends on the ratio of black or brown eumelanin to yellow ...

4. Titian hair - Wikipedia

   en.wikipedia.org/wiki/Titian_hair

   Whereas Titian hair is a brownish shade of red hair, auburn hair is a brownish shade of hair encompassing the actual color red. Most definitions of Titian hair describe it as a brownish-orange color, [5] but some describe it as being reddish. [6] This is in reference to red hair itself, not the color red.

5. Olfactory receptor neuron - Wikipedia

   en.wikipedia.org/wiki/Olfactory_receptor_neuron

   The olfactory receptor neuron has a fast working negative feedback response upon depolarization. When the neuron is depolarizing, the CNG ion channel is open allowing sodium and calcium to rush into the cell. The influx of calcium begins a cascade of events within the cell. Calcium first binds to calmodulin to form CaM.

6. Farouk Shami - Wikipedia

   en.wikipedia.org/wiki/Farouk_Shami

   Entrepreneur. Known for. CHI hair care products. Texas gubernatorial candidate. Political party. Democratic. Farouk Shami is a Palestinian-American businessman and founder of the hair-care and spa products company, Farouk Systems located in Texas. [1] In 2009, Shami ran in the 2010 Texas gubernatorial election.

7. Clairol - Wikipedia

   en.wikipedia.org/wiki/Clairol

   Clairol logo. Clairol is the American personal care-product division of company Wella, specializing in hair coloring and hair care.Clairol was founded in 1931 by Americans Joan Gelb and her husband Lawrence M. Gelb, with business partner and lifelong friend James Romeo, after discovering hair-coloring preparations while traveling in France. [1]