Skin, Hair and Nail Problems

I am a female.Many months ago a got a big lump on my right arm. After some months I squeezed it and there was puss coming from it. After that the area turned black after some time I squeezed it again and something semi solid black thing came out after that this area is like a hole that is black and it hasn't sealed since months. Pls tell if anything serious. I am attaching picture of it

Should we change our face wash often? Is it possible that a face wash may not work after long usage?

Best cream to reduce melanin. So I can get fair skin . I have already tried "skin lite" Please suggest a good Cream.

I am having lump prblm in both both armpit At the same spot everytime and every 1.5 months later what is the reason it's painful and happens in both armpit s

About a month ago I stubbed my toe accidentally. It was bleeding initially but after a week the pain I had got completely healed. Now I can notice my toenail shaking and also it turned yellow-reddish color. What does this mean? Are there any fungal infections? How can it be cured?

I have stretch marks that Is deep and is over 5years ,at my upper body , I want appropriate treatment , I'm thinking of getting laser therapy for the stretch marks

Can one use aziderm 15% gel for acne and hyperpigmentation for acne prone skin??.. my skin is combination type and there is so much congestion on the cheek area.. kindly suggesy

Is acne star soap and gel or benzoyl peroxide get 2.5% good for acne is there any side effects.. Apart from killing acne bacteria will this also reduce sebum oil ...and after dryness should we use moisturizer like pure alovera or no need to apply anything..

If we have pimples or acne on face that time we can use moisturizer or not?NMFE daily moisturizing  lotion is good for pimples or not

I have small bumps on my pubic area they itch badly sometimes other than that they cause no problem. But they are dividing and look terrible. Please suggest some medication. I am not really comfortable in a surgery at this moment. If possible some cream or medicines that can help them fade or go. Thank you in advance.