| in Did You Know Facts
Retinoids come from animals. Carotenoids are retinol sources found in plants.
The enzymes in milk or eggs are the main sources of retinoic acid. Retinoids derived from animals have previously been thought to be more effective for skin care. Carotenoids, which are found in plants, are sources of vitamin A, and when utilized regularly, they can be equally as useful.
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