other variables like overall diet, fitness etc?

I would advise against this. I believe a study shows that although lemon juice lightens hyperpigmentation, applying as a topical also impairs the functioning of your skin barrier, which leaves the skin more prone to acne scars and infections. However, if you choose to do this, I would strongly recommend diluting the lemon juice as it is strongly acidic and will cause an imbalance in pH in the skin. Be careful and good luck.

We I try to stay away from carbohydrates and I dont do much exercise since I'm fit I did start drinking one carrot juice a day which I heard can cure your acne in about two weeks I try not to consume a lot of sugar.

As for the lemon I noticed that some of my acne scars are less noticeable so some of my little whitehead(under the skin bumps) are starting to go away on my forehead .oh and I also started to have better oral hygiene.BTW I'm a teen so I'm not doing it for adult acne.

Update I stopped putting lemon on myface it seemed to irritate my skin which broke it out even more but I'm still drinking lemon water.I'm also using caladryl (calamine)has a spot butits eextremely drying so I use it twice a week and I don't recommend using this as a mask

Get rid of, no. Help. Sure. Drinking diluted lemon juice aids digestion, provides vitamin C, etc. Topical diluted lemon juice restores PH, provides vitamin C, may lighten hyperpigmentation, etc.

I would advise against this. I believe a study shows that although lemon juice lightens hyperpigmentation, applying as a topical also impairs the functioning of your skin barrier, which leaves the skin more prone to acne scars and infections. However, if you choose to do this, I would strongly recommend diluting the lemon juice as it is strongly acidic and will cause an imbalance in pH in the skin. Be careful and good luck.

I would dilute it as well,

But if the OP has been using an OTC cleanser for years then I would strongly recommend using lemon juice topically. Diluted in a little bit of water. Your skin is naturally acidic and after years and years on cleansers and topicals, your faces natural acid mantle can be in need of repair.

I would avoid drinking it,

It's horrible for your teeth and citrus is a common food allergen.

I would just consume good old fashion water along with green/white tea.

I would avoid drinking it,

It's horrible for your teeth and citrus is a common food allergen.

Rinse your mouth after and yes, IF you are intolerant to it, then don't consume it.

You can use a straw have you tried drinking a teaspoon (not sure if it is a teaspoon) of acv a day. I dont do citrus even one drop of lemon juice will cause a cyst for me. One tangerine will mean increased heart rate, intense itching 2 cysts withing 3 minutes ish, dizzines oh and 2 tangerines will mean a trip to the hospital. 3 tangerines will probably kill me which is sad as i never thought i would be so easy to kill. Death by tangerines isn't exactly appealing.

Sorry I dont mean to scare you have you tried applying licorice extract or applying a 4 percent niachimide solution you can google some recipies.

Thanks for all the advice I'm still drinking lemon water which has helped a ton.I drink about two tablespoons of acv in one water bottle a day.also I'm going to start putting on a potato mask every night for two months to see if I can get rid of theses hyperpigmentions.I'll try to update almost every day . : )