My scalp was chemically burnt, I still have bald spots. 31 years old what are my options for a full head of hair again? (Photos)

In  my opinion, you need to visit a hair loss expert. They will do a history, examination including microscopic examination and woods light, blood work and  possibly biopsy. it's important to be able to assess the status of the follicular units in order to determine if hair regrowth is possible. Should the follicles be absent, hair transplantation may be a viable option.

You would benefit tremendously from seeing a board certified dermatologist and by having a scalp biopsy. You likely have central centrifugal cicatricial alopecia (CCCA) and, in my opinion, any and all treatments should not be started until this diagnosis is either confirmed or ruled out by a dermatologist following proper techniques of scalp biopsy.

You don't give a time frame- if it's only been a few weeks or months you might get some improvement; if it's been a year or longer you likely have permanent loss.  You can graft hair follicles into healed burn areas though the take won't be as good as grafting into healthy skin so you may need more than one procedure, or possibly micropigmentation after the first one.  Find a local hair restoration surgeon for an evaluation.

Hi there, 
I'm sorry to hear you are going through a tough time with your hair. If you hair has not regrown after 12 months following your burn you may benefit form a hair transplant to cover the areas of concern. I would suggest you see a hair loss specialist who can assess your history and scalp. All the best.

We truly feel your anguish.
Certainly see a hair specialist. Scaring is difficult to overcome. It is likely some or most of the affected follicles are dead.
However, you might consider PRP therapy and possibly adding some extracellular matrix (ECM) prior to a transplant. The PRP will help regenerate what is possible and the ECM will help additionally with the scaring. Thus possibly being able to regain more hair.
You will likely need to be a bit more patient than the average person to overcome so much. That which does not return and will not cover easily will likely need to be transplanted. 
Using the PRP first may allow you to reduce the number of transplants and thus the cost. As well the ECM will certainly make the transplant areas a much more fertile area for transplants.  
Wishing you all the best and great success in finding a remedy to your situation.
Warmly,
Arbella Sarkis, MD

Great question. In my opinion, if you have been more than 12-15 months after the chemical burn and you noticed no hair regrowth, it was a full thickness burn with permanent damage to the hair follicle. You may be a good candidate for hair transplantation. Also it is important to rule out any other cause of scarring alopecia. So, I will suggest you to schedule a consult for evaluation with a local hair loss specialist. Good luck. 

Chemical burns occur from the use of chemicals to straighten the hair. When used improperly, the burn goes down to the hair root and can permanently kill the hair. Hair transplants can treat this problem