Light and Optical Technologies
Laser Hair Remover
Pros:
Permanent hair removal
Can be done on any where on your body.
Works on black hair really well
Safe to use
Works efficiently
Cons:
Hair may grow faster and thicker
Can also cause acne or other skin condition
High- concentrated light is used
Description:
Laser Hair Removal I think should not be done because apart from all the pros, it can cause some serious health problems. It is not also guaranteed that it will remove hair, and they won't come back so your money will go to waste which is $200 per session.
UV light
Pros:
Produces vitamin D
Helps with some skin conditions
Helps with mood
Helps animal's vision
Aids insect navigations
Useful for disinfection
Cons:
Causes skin cancer
Causes Sunburn
Damages immune system and eyes
Ages skin
Weakens pestics
Description:
UV light is also something I am against
GPS
Pros:
Helps you get to your location
Easier than using a map
Other functions like maps, weather, camera
Doesn't use data
Cons:
Not as reliable
Not as accurate
It can lead you to unsafe places (forests)
Description: