Hey there! I have used your extensions before and LOVE them. Its been a few years, I have since let my natural root color grow out. I used to use the ash/platinum I-tip extensions. If I have darker roots and lighter ends, can I use solid color I-tip hair?

Just make sure that the hair at your ends matches the extensions. That's where they need to be seamless to blend. The roots are less important than how your ends lay over and into the extensions. :) You should be able to use a solid color just fine.
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