Hair doesn't have to be dry and frizzy after washing. Many people experience this issue due to their hair care routine or the products they use. Here are some tips that can help prevent your hair from becoming dry and frizzy:

1. Use Gentle Shampoos: Choose shampoos that are sulfate-free as sulfates can strip the natural oils from your hair, leaving it dry and prone to frizz.
2. Condition Regularly: Conditioner is essential for maintaining healthy hair. Use a conditioner that's appropriate for your hair type, and consider deep conditioning treatments once a week.
3. Cold Water Rinse: After shampooing and conditioning, rinse with cool water to help seal the cuticle and reduce frizz.
4. Blot Instead of Rubbing: When drying your hair, use a soft towel or an old t-shirt to gently blot the excess water out instead of rubbing vigorously, which can cause breakage and frizz.
5. Use Leave-In Conditioners and Serums: These can provide extra moisture and protection against frizz.
6. Avoid Heat Styling: Whenever possible, allow your hair to air-dry. If you must use heat styling tools, use them on the lowest setting and apply a heat protectant product first.
7. Protein Treatments: Sometimes hair becomes frizzy because it lacks protein. Using a protein treatment periodically can help strengthen the hair shaft.
8. Regular Trims: Getting regular trims can help prevent split ends, which contribute to dryness and frizz.
9. Hydration: Drinking plenty of water can also help keep your hair hydrated from the inside out.
10. Sleep on a Silk Pillowcase: This can reduce friction on your hair while you sleep, leading to less frizz in the morning.

Implementing these strategies should help make your hair softer and smoother, reducing dryness and frizz. Remember, everyone's hair is different, so it might take some experimenting to find the right combination of products and techniques that work best for you.