Am I experiencing post-inflammatory hyperpigmentation? (Photo)

I'm undergoing laser hair removal and have been advised to shave in between treatments. I developed severe razor burn, applied aloe vera (quite successful), however, the area changed colour over a few days... I'm of olive complexion and prone to hyperpigmentation under my arms as well. Will hydroquinone or retinol help at all? Any other suggestions to aid healing? Thank you.

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