Use sulfate-free shampoos and conditioners designed for chemically treated hair. Avoid hot water when washing your hair, as it can strip away natural oils and affect the straightening. Use a wide-tooth comb to detangle and be gentle when brushing to prevent breakage. Minimize heat styling to prevent damage. Apply heat protectant products if you must use heat styling tools. Schedule regular touch-ups with a professional to maintain the straightened look. Protect your hair from chlorine and sun exposure.