Insect bite allergy is the exaggerated inflammatory response to the bite or sting of an insect. Arachnids such as spiders and ticks, and Insects including fleas, blackflies, deerflies, horseflies, mosquitoes, ants, bees, hornets and wasps, and arachnids such as spiders and ticks can cause an allergic reaction in sensitive dogs.
~~[VCA Animal Hospitals]

How is Shieba doing? From what you describe, it sounds like skin irritation, likely from the gel, cream, or powder. I would be most concerned about her eating some of the stuff, and having that cause physical issues. Was there a lot of gel, cream, or powder left when you got home? Was most of it on the floor? Do you think she ate a lot of it or was she mostly just playing with the stuff?

When in doubt, I usually bring my dog in to see the vet just to make sure that everything is ok.

Hugs to Shieba. Hope she is feeling better.

To do this, I take my Sibe to the vet, to rule out skin parasites, and get my vet’s advice on next steps.

Next, I may look at other contributing factors, for example examine my dog’s diet, stool, and routine. These will indicate whether the cause is dietary or environmental in nature.

My Huskies also have a lot of fur, and because of that, they heat-up really quickly during hot weather. Here are some of the things that I do to help my Sibes stay cool during the summer months.

They usually prefer to stay inside the house, when it is hot outside. When they do venture outside, I make sure they have a ready supply of clean, cool, water, and that there are many shady spots with free air-flow.

As for sunburns,

light colored animals can get sunburned just like people. Encourage them to stay in the shade and ask your veterinarian for a recommendation on sunblock for your pet.

The Veterinary Specialty Hospital of San Diego (VSH)

Here is another article on dogs and sunburn -
http://www.petside.com/article/can-dogs-get-sunburned

I just found out what those red markings are.. and its a sunburn! I live in a tropical country and its summer now. Which means it’s super hot. Do you have any suggestions on how can I prevent it from spreading all over her body? and how can I treat those sunburns? Thanks in advance

What kind of “red markings”? Are they little dots? Is there hair loss? Does she try to scratch the area frequently?

For health issues that I am unsure of, I usually take my dog to the vet, especially if it is causing discomfort or irritation. Otherwise, I end up worrying myself silly anyway ; so better to be safe and catch things early.