
Retinaldehyde: The Middle-Path Retinoid Nobody Talks About
Retinaldehyde is roughly 11× more potent than retinol with comparable irritation. The reason it's underused isn't clinical — it's supply chain economics.
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Retinaldehyde is roughly 11× more potent than retinol with comparable irritation. The reason it's underused isn't clinical — it's supply chain economics.

Tretinoin is the gold-standard retinoid for hyperpigmentation, and one of the more common iatrogenic causes of hyperpigmentation in darker skin tones. Both…