Stubborn dandruff may be caused by a fungus on your scalp that causes the skin cells to accumulate and become flaky. Scratching too much could also be the cause of a sore head. Use a medicated shampoo that treats the fungus and calms your scalp; additionally, wash your hair gently and frequently.

Your face might seem burnt from too much exposure to the sun, and this can be very uncomfortable. This occurs when the skin gets too much sun without protection. Symptoms can be redness, pain, and maybe blistering. Immediately get into the shade for relief, apply a cool compress, and use aloe vera gel to soothe. Wear sunscreen in future to avoid a repeat of the same.

Acne occurs when you have these red spots on your face caused by your skin producing too much oil. It's super common, especially during the teenage years. To help, you can use a face wash with benzoyl peroxide or salicylic acid. These can clear up your skin by unclogging your pores.

To help the wound heal, ensure that you keep it clean and dry, wash the area gently with some mild soap and water then dry. Any rough movements which might disrupt the stitches should be avoided. Consult with Your Doctor on the right type of vitamin C use, usually white because colored ones could have added ingredients. Should there be signs like increased pain, redness, swelling, or pus, then do seek medical Help immediately as this could mean infection.

For whiteheads, you can use retinoid cream or gel. And for large pores, exfoliating scrub or a clay mask can be helpful as they help reduce the size of pores. Moisturizers and sunscreen( atleast 30 SPF) can also be useful to keep your skin healthy. 

You've been dealing with ringworm for a long time. Ringworm is a common fungus infection that can appear in different parts of your skin and cause red, itchy, circular rashes. Furthermore, while the drug takes away the discomfort, returning too soon may lead to a relapse. Regularly washing your clothes and bedding will also help limit the infection.

Blisters on the foot can be caused by a number of factors including friction, burns or some skin conditions. The affected region must be kept clean and dry to prevent infection. I recommend to visit a dermatologist for a proper diagnosis and treatment.