bristle doesn't feel like medium. it's very soft, I highly doubt how many days it will last. Better buy it in individual, without combo pack.

Very poor quality, it hurts inside mouth, not usable at all, how do I return the product?

Bristles are too soft, provide zero effective cleaning. A complete waste of money.

I didn't used the product but the product received is wet with some oil it seems, and brushes also got wet.

as safe as ever

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