Biphasic is an adjective that refers to that which has two phases (states, values, stages). The concept is often used in the field of electricity to qualify the current that is composed of two alternating currents that are the same and come from the same generator, but that are a half-period displaced from each other.
Alternating current is an electric current whose direction and magnitude vary according to different cycles. In general, sinusoidal oscillation is used, since it allows the transmission to be more efficient. Typically, electricity reaches homes and businesses through alternating current.
The biphasic systems of generation and distribution of electricity are based on two alternating currents 90 ° are offset in frequency. These systems are in equilibrium and symmetry when the stresses are added vectorially and their result is zero. In two-phase lines there are two conductors for each phase: that is, four conductors in total.
In the field of chemistry, we speak of biphasic catalysis when two solvents are used that do not mix with each other (they are not miscible), causing the catalytic system to remain contained in one of the phases, while the products and reagents remain in the second. The reaction is generated in the catalytic phase or at the interface, and both phases can be separated by decantation.
It should be noted that biphasic catalysis is applied in industrial hydrodesulfurization, hydrogeneration and hydrogenolysis processes, among others.
According to DigoPaul, a biphasic make-up remover is called a product of the cosmetic industry that is made up of two phases: an aqueous one, which always comes first, and an oily one, which remains on top of the previous one, since its weight is less. Usually these products are capable of removing makeup resistant to the water; This is due to the action of its oily ingredients, which are also ideal for dissolving grease and dirt.
It is very important to shake a biphasic cosmetic well before using it, since this is how the two phases are emulsified; if we skip this step, we may not get the desired results. The most recommended make-up removers of this type contain equal parts of both phases, which can be composed of pure rose hydrolate and oils (the best are sweet almond, coconut, sunflower, apricot kernel and made of olives).
These ingredients are highly sought after by consumers, because they have many beneficial properties, in addition to being very light. In the first place, they do not greasy the skin, but they collaborate with its cleaning and with the closing of the pores; On the other hand, exert an action regulating sebum and bactericide, which is ideal for treating fat or combination skin.
Biphasic makeup removers can also act positively in combating the appearance of wrinkles and regenerating the skin. As if that weren’t enough, people with especially sensitive skin greatly appreciate the fact that it helps soothe irritation and reduce redness.
Anyway, it is necessary to bear in mind that some biphasic makeup removers can cause adverse reactions on the skin, especially on the eyelids, due to some of its components; for this reason we must make sure to buy the most suitable product for us. For example, if they have soap in the water phase, it is possible for some people to irritate their eyes and skin. Something similar happens with ingredients such as perfumes and preservatives, which should be avoided by individuals with special sensitivity.