I have a lot of expiernece with semi permanents, and I have found these tips the best: COLD WATER, I know it's not ideal, but it keeps the hair cuticle closed easier and semi permanents only slightly penetrate the hair cuticle; avoid washing your hair every day and when you do shampoo it, use a sulfate free one and don't let it sit very long; do not apply heat, including curling/flat ironing/blow drying, and if you do, use the lowest heat setting or cool if applicable (and wear a heat protectant); also avoid direct sun exposure and when you can, wear a UVA/UVB hair protector (OGX makes a good one!); you can also try a cleansing conditioner instead of shampooing or using dry shampoo. Pretty much, you have to baby it. I see comments saying to add color to your conditioner, and I cannot tell you how terrifying that is! Hair professionals shouldn't be advising that since it can cause excess damage. Also make sure your keeping up the integrity of your hair, that helps the layers of your hair retain color!