Skin tone depends on the melanin in the skin. The more melanin more akin tone will be dark. Weight loss or fatloss has nothing to do with skin tone. Focus on healthy eating, mindful eating, drink good amount of water, also check your skin routine once. Acne can be manage with good balanced diet. Skin tone can be improved with good nutrition.
Next Steps
if you have acne issues soak 1 tsp saunf in 1 glass water over night consume next morning do this thrice a week.
Health Tips
Take professional help if required