Great, but with some limitations: please read!
So here's everything you need to know to help in your purchasing decision:  1) yes, this will do skin tags and it will do sun spots and it will do actinic keratoses...BUT 2) this is not liquid nitrogen so it doesn't land on the skin as cold as liquid nitro, so this means you will likely have to do several applications. Do one application, wait a week, then do another if need be, and so on.  3) this product sprays extremely messy, even with the sprayer straw attached.  You could never 'hit' a single tiny spot because it splatters.  You will need to either a) make a template by putting a tiny hole in a piece of stiff paper/cardboard/plastic and placing it over your 'spot' before spraying or b) buy otoscope tips and use them to guide the spray.  After using both, I think a template is the best answer.  Be sure to press either of these firmly against your skin before spraying.  Overall, I recommend this product because with practice, it WILL work and will save you many $$$$ over a dermatologist treatment for non-cancerous 'barnicles'.  But if you don't know what it is (if its not tan colored and you haven't had prior education or experience with an exact looking 'barnicle' or spot) best to see a Dermatologist to be sure what you are dealing with.  Diagnosing yourself, unless in the medical field, is never a good idea.  As for me, I have age spots, also known as lentigines and also called liver spots- I hate them and get them removed often.  So I purchased this product to save me money and it will certainly do that!
Rating: 4 stars