It's a good idea to try new hair products when you feel that your current hair routine isn't giving you the results you want, or if you're experiencing issues like dryness, breakage, or other hair concerns. You might also want to try new hair products if your hair has changed in texture, length, or thickness.
When trying new hair products, it's important to do so one at a time. Introducing multiple new products at once can make it difficult to know which one is causing any issues or changes in your hair. Start by adding one new product at a time, and give it a few weeks to see how your hair responds. Be patient and consistent, and use the product according to its instructions.
It's also a good idea to do a patch test before trying a new product. Apply a small amount of the product to a small section of your scalp or hair, and wait 24 hours to see if you have any adverse reactions. If you do experience any itching, redness, or other symptoms, discontinue use of the product and consult with a healthcare professional.
Ultimately, the decision to try new hair products is a personal one, and should be based on your hair's individual needs and your own preferences. Be mindful of the ingredients in the products you're considering, and make sure they are appropriate for your hair type and concerns.