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The hypothalamus reduces GHRH, and the pituitary reduces GH secretion

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Always confirm against the manufacturer's specific instructions for your vial

Even with niacinamide's protective benefits, it's important to: Begin using retinol 1-2 times per week Gradually increase frequency as your skin builds tolerance Use a pea-sized amount for your entire face Give your skin time to adjust before adding additional active ingredients Benefits of Using Niacinamide and Retinol Together Enhanced Skin Barrier Function and Reduced Irritation The most immediate benefit of this pairing is how niacinamide mitigates retinol's potential side effects: Minimized dryness and flaking : Niacinamide boosts ceramide production, enhancing the skin's natural moisture barrier that can be compromised during initial retinol use