Why two ingredients are necessary in order for a substance to be called a hand cream

lanolin  and a mixture of stearic acid and triethanolamine

Explanation:

lanolin -

It is responsible for the absorption of the water in the skin , i.e. , to make the skin hydrated .

Lanolin is ester of the long chain fatty acid , with waxy feel to it .

The mixture of stearic acid and triethanolamine  act as a emulsifying agent .

These reactants reacts to give salt , hence act as an emulsifying agent .  

2h2o2--> 2h2o + o2

this reaction is of the spontaneous decomposition of hydrogen peroxide down into water and oxygen.

add 2 molecules of hydrogen peroxide and 2 molecules of water. since oxygen is naturally diatomic, the total number of atoms of each element is now the same on both sides of the equation so it is balanced.

this may not be entirely correct but let me know.

2b2t

explanation:

2b2t