Macrogol lauryl ether

Macrogol lauryl ether Macrogol oleyl ether Macrogol stearyl ether Lauromacrogol... 

Scalp (dry) Solution (washable, oily) Vegetable oils, octyldodecanol, triglycerides medium-chain blended with surfactants (for example macrogol lauryl ether)... 

For the treatment of the scalp hydrophilic solutions and hydrogels, liquid emulsions and washable liquid oils are used. Examples are olive, almond or refined castor oil, as well as fatty alcohols such as octyldodecanol, all in combination with a surfactant, for instance macrogol lauryl ether 4. The decision for one or the other base depends on the skin conditions. A seborrheic scaling scalp is often treated with hydrophilic preparations, a dry and scaling one is treated with hquid oils. 

The polyoxyethylene alkyl ethers are a series of polyoxyethylene glycol ethers of n-alcohols (lauryl, oleyl, myristyl, cetyl, and stearyl alcohol). Of the large number of different materials commercially available, four types are listed in the USPNF 23, one type in the JP 2001, and four types in the PhEur 2005. BP Macrogol cetostearyl ether... 

The selection of the surfactant is mainly based on the compatibility with the active substance. Sodium lauryl sulfate is an anionic surfactant and therefore incompatible with cationic active substances. Cetomacrogol emulsifying wax BP is incompatible with high concentrations of phenolic substances due to an interaction of the phenolic group with the polyethylene glycol chains in the macrogol cetostearyl ether. It is compatible with acids, high concentrations of electrolytes and cations. 

---