Almost all glues are dangerous for the eyes. Particularly so are the cyano-acrylites, (krazy and super glues )
Yes very avoid contact with the eyes ears and mouth even skin wear gloves
The colour could be without any quality, so it would hurt the skin and maybe blind you, if it reached your eyes. But most colours aren't very dangerous.
Because Australia and New Zealand live under a hole in the Ozone layer making the effects of sunlight dangerous to the skin and eyes and causing skin cancer.
Any skin cream containing lanolin will help. If using glues irritates your skin you can get 'barrier cream' in many pharmacies. some brands of it work very well at protecting your skin.
because the hydrogen starts to burn and causes fire and it also spits out very hot acid which is dangerous for your eyes and could burn your skin instantly.
All UV light can damage skin and eyes as well as causing various kinds of cancer, including melanomas. Damage to the eyes is extremely painful and can result in permanent blindness while skin cancers may ultimately result in death. UVB is very penetrating and is the cause of sunburn.
Melanoma is skin cancer. This type of skin cancer is the most dangerous form to have and it usually multiples very quickly.
Potato
You would embroider your own skin the same way that you would a cloth. This however is a very dangerous process.
yes you can. skin around eyes is really itch, white of eyes looks ok, but nostrils and eyelash areas are so sore. I have taken an anti histamine, but have discovered the chemical PPD -used in perm hair dye is very dangerous. Not using it again as it causes blindness and hairloss.
Many glues are very strong. There will be many 'strongest glues for different materials. You MUST specify a material for a definitive answer.
Acidic waters in a cave can be very dangerous to spelunkers. The acid that the water contains can burn the skin severely.