Each time I use the gentle magic Lotion and Vanishing cream I develop an itchiness on my skin and I develop a little rash which looks like heat rash. Could this be an allergy to the range or I should try using the whole range?

Certainly sounds like it.

If I am getting the reaction I described what Gentle magic product should I use? Should I try using the gentle magic serum? Will it reduce the uneveness of my skin tone?

Probably a better idea to find a different brand that doesn't cause this type of reaction..

I used Gentle Magic for only two days and I had such a bad reaction that I had to stop using it immediately. I also experienced itchiness and a rash, but for some reason, the tissue under my right eye started to swell and the skin around my nose started to peel - as if the skin was dried out completely. Now when I put on face cream, there is a burning sensation all over. I'm not using this product ever again.