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2. Vitamin A - Wikipedia

   en.wikipedia.org/wiki/Vitamin_A

   Vitamin A occurs as two principal forms in foods: A) retinoids, found in animal-sourced foods, either as retinol or bound to a fatty acid to become a retinyl ester, and B) the carotenoids α-carotene (alpha-carotene), β-carotene, γ-carotene (gamma-carotene), and the xanthophyll beta-cryptoxanthin (all of which contain β-ionone rings) that ...

3. Retinyl acetate - Wikipedia

   en.wikipedia.org/wiki/Retinyl_acetate

   Retinyl acetate (retinol acetate, vitamin A acetate) is a natural [dubious – discuss] form of vitamin A which is the acetate ester of retinol. It has potential antineoplastic and chemopreventive activities.

4. Retinol - Wikipedia

   en.wikipedia.org/wiki/Retinol

   Retinol, also called vitamin A 1, is a fat-soluble vitamin in the vitamin A family that is found in food and used as a dietary supplement. [3] Retinol or other forms of vitamin A are needed for vision, cellular development, maintenance of skin and mucous membranes, immune function and reproductive development. [3]

5. Don't Make This Rookie Retinol Mistake Like I Did

   www.aol.com/dont-rookie-retinol-mistake-did...

   Available in prescription and over-the-counter form under different names like retinoic acid, tretinoin, retinyl palmitate, and retinyl acetate, the vitamin A derivative is used to treat ...

6. Senior dog diet - Wikipedia

   en.wikipedia.org/wiki/Senior_dog_diet

   Beta-carotene can be found in certain vegetables and it is a highly potent antioxidants. The number of T-cells is naturally decreased with age, leading to compromised immune function. However, in old dogs supplemented with dietary beta-carotene had no statistical difference in the amount of CD4+ T cells when compared to younger dogs. [36]

7. What's the Difference Between Retinol and Retinoids?

   www.aol.com/whats-difference-between-retinol...

   Dermatologists explain the difference between retinol and retinoids, including strength and their effects on wrinkles and acne. Discover the right one for you.

8. Hypervitaminosis A - Wikipedia

   en.wikipedia.org/wiki/Hypervitaminosis_A

   Hypervitaminosis A refers to the toxic effects of ingesting too much preformed vitamin A (retinyl esters, retinol, and retinal). Symptoms arise as a result of altered bone metabolism and altered metabolism of other fat-soluble vitamins. Hypervitaminosis A is believed to have occurred in early humans, and the problem has persisted throughout ...

9. Dermatologists Say These Are the Best Gentle Retinol Serums ...

   www.aol.com/dermatologists-editors-best-retinol...

   Dr. Shirazi says Retinyl Palmitate is the lightest and most gentle form of retinol. “I call it the chamomile tea version since it has to be converted three times to have an effect on the skin.