Skin discoloration at your fingertips can be caused by many things, including an injury, illness or a fungal infection. It is recommended a dermatologist to be consulted for a correct diagnosis and recommended treatment.
 

The most likely cause is acne or ingrown hair. Accordingly, look for creams with active substances like benzoyl peroxide or salicylic acid to help them go away. These can be found in different brands, including Neutrogena and Clean & Clear. Gently wash your face first, before applying the cream. 

It could be for many reasons, including hormones, stress, genetics and skin care products that can cause acne. It is recommended that you consult with dermatologist to assess your skin and determine the best treatment for your specific needs. In the meantime, maintain a gentle and consistent skincare routine, including cleansing your face twice daily with a mild cleanser and moisturizing with a non-comedogenic moisturizer. Avoid irritating ingredients such as alcohol and fragrances.

Laser scar removal is not usually recommended for deep scars on the face. Please consult a plastic surgeon. Based on your condition and by physically examining you, he will tell you which is a suitable treatment for you. 

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. 

Hair going white with age or being genetic is a usual thing. Skin problems and tension also cause this. Do something for yourself if under stress; take deep breaths maybe start doing yoga. Have a balanced diet rich in vitamins and minerals as they play a crucial role in preventing premature greying. If possible use plant-based dyes because they don’t contain harmful chemicals however; don’t forget to handle your hair gently while dying it so that you may not end up damaging it further. 

Your scalp problem could be a medical issue that requires medical treatment. I recommend you should pay a visit to a dermatologist, who is a skin expert. They can detect the condition and recommend the medications or treatment option that should be taken. Avoid using any harsh chemicals on your scalp until you have been to a doctor.
 

You may have hyperpigmentation after inflammation, which is a consequence of skin inflammation such as a fungal infection. The dark color of the skin is the result of the skin's recovery mechanism. A gentle exfoliating scrub or a vitamin C-rich skin-brightening cream are examples, you can fade the pigmentation by trying them. It is important to use an SPF product as UV rays can aggravate the pigmentation.