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| Efficacy of topical 0.05% retinaldehyde in skin aging by ultrasound and rheological techniques | |||||||||||||||||
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| Tolerance profile of retinol, retinaldehyde and retinoic acid under maximized and long-term clinical conditions | |||||||||||||||||
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| Unoccluded retinol penetrates human skin in vivo more effectively than unoccluded retinyl palmitate or retinoic acid | |||||||||||||||||
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