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Both Iodine and Methylene Blue will work - iodine is probably used more often for onion.
Glycerine polymer is used for many things one of them is soap. And glycerine is bio- degradable. and is Non Toxic. Glycerine is found in most things we consume and use .
we can apply glycerine to the roughened areas and we can even use the combination of glycerine and honey over lips and face to smoothen. and even for the cracks on the heels we can use glycerine.
You can use an onion to remove the smell from spoiled paint. In the room or area where the bad smell is lingering, peel an onion and cut it in half. Place on a plate and leave it there for a couple of days.
Mix glycerine with rose water and apply on lips at night to remove lips darkening.
I do some DJ stuff and event organisation.and i actually use glycerine in my smoke machine.mix it with 1 part distilled water and 1 par glycerine for a good thickish smoke.less glycerine the cheaper it will be and thinner smoke.
Once I read an article that contained a suggestion on how to make perfumes by yourself. It mentions that you can use glycerine ( a substance needed in the making of soaps). Glycerine helps perfume to keep perfumes maintain it's fragrance longer.
An onion is easy to peel to 1 layer of cells, and with a light microscope you cant see the individual cells in a leaf. Also the cell obtained from the bulb of onion is colorless, hence it can be easly stained with different dyes to study the cell organells under the microscope.
So that you can observe different characteristics of the cell clearer such as the nucleus, vacuoles or other membrane bound organelles.
No, use either a zester or grater to remove the peel for recipes.
No it is not good, as it is sticky, use K.Y. Jelly instead.
use glycerine just one drop no harm