No, the idea that hair grows faster after trimming is a myth. When you cut off the ends, they simply stop splitting and breaking, which makes it seem like your hair is growing faster. In reality, your hair grows at the same rate, but the length stays because it’s no longer breaking off. Here’s a client’s hair right after trimming the thin ends: 
And here’s the same client’s hair 5 months later, after the second haircut: 
Split ends should always be trimmed, because if you don’t, they will continue to split and cause more damage than necessary. There are no miracle products - serums or oils - that can actually repair split ends, so holding onto damaged ends without trimming is pointless.
Once you trim them, you’ll finally notice your hair’s true growth.
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