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2. Hair coloring - Wikipedia

   en.wikipedia.org/wiki/Hair_coloring

   A woman with dyed pink hair. Hair coloring, or hair dyeing, is the practice of changing the color of the hair on humans' heads.The main reasons for this are cosmetic: to cover gray or white hair, to alter hair to create a specific look, to change a color to suit preference or to restore the original hair color after it has been discolored by hairdressing processes or sun bleaching.

3. Hair highlighting - Wikipedia

   en.wikipedia.org/wiki/Hair_highlighting

   Coloring a young girl's hair with temporary spray paint. Hair painting is a method of highlighting hair that uses free-handed technique to achieve a highlighted effect. Hair painting methods are permanent and employ a hair-painting brush. Foils, plastic wrap, paper, or cotton may be used to separate lightened hair from non-lightened hair.

4. Alkyd - Wikipedia

   en.wikipedia.org/wiki/Alkyd

   Alkyd resins may be classified as drying (including semi drying) and nondrying. Both types are typically produced from dicarboxylic acids or anhydrides, such as phthalic anhydride or maleic anhydride, and polyols, such as trimethylolpropane, glycerine, or pentaerythritol. [5] Alkyds are a synthetic resin and used in items such as paints.

5. Drying oil - Wikipedia

   en.wikipedia.org/wiki/Drying_oil

   The "drying", hardening, or, more properly, curing of oils is the result of autoxidation, the addition of oxygen to an organic compound, and the subsequent crosslinking. This process begins with an oxygen molecule (O 2 ) in the air inserted into carbon-hydrogen (C-H) bonds adjacent to one of the double bonds within the unsaturated fatty acid.

6. Curing (chemistry) - Wikipedia

   en.wikipedia.org/wiki/Curing_(chemistry)

   Figure 4: Evolution in time of storage modulus G' and loss modulus G" during a curing reaction. A simple way to monitor the change in viscosity, and thus, the extent of the reaction, in a curing process is to measure the variation of the elastic modulus. [7] To measure the elastic modulus of a system during curing, a rheometer can be used. [7]

7. Dye - Wikipedia

   en.wikipedia.org/wiki/Dye

   A "vital dye" or stain is a dye capable of penetrating living cells or tissues without causing immediate visible degenerative changes. [26] Such dyes are useful in medical and pathological fields in order to selectively color certain structures (such as cells) in order to distinguish them from surrounding tissue and thus make them more visible ...