issy, I think you are a IV. From what I can tell from your facial photos and the legs, compared to myself and the pictures I have taken in different lighting, I’d say you’re the same or a little more tan.
I also, like you, tan easily and have never had sun burn.
When I joined these forums I too thought I was a type III-IV. LAgirl was confident I was a IV and this was confirmed by the clinic. They have an Apogee Elite and a Lightsheer diode and I have been treated with a YAG, unlike some other HairTell members who had their test patches with the Lightsheer (and judging by their photos, they are more towards a type III).
YAG worked great on my lower legs in 3.5 treatments (you can see my thread for pics). I had 4 treatments on the front thigh and the results were okay. I didn’t continue as I felt the hairs weren’t responding despite the settings being almost maxed out. It wasn’t a case of the hairs being too fine either.
I also had 5 treatments on the lower 3-quarter arms. I did not have the top quarter arm treated (nor is my sister) because the hair is fine and because of the risk on induced growth. Even my tech advised against treating this area.
I think the spot tests are important. I generally had 3 different settings tested before areas were started. At the end of every session, my tech would again test one or two for the next session if we were pushing them up.
To give an example, on my arm test patch, I bruised at the highest of the 3 tests. It felt like a steam burn for more than 24hrs and was pretty painful, there’s no way I’d want my whole arm like that. After a few sessions (once a good amount of the hair was gone), we tested it again and I reacted fine. We used this for my next treatment and it was all good.