Carotenoids: oral & topical use of beta-carotenes

Carotenoids are a class of antioxidants that protect the skin from environmental stressors, in particular, from ultraviolet damage. There are hundreds of carotenoids, and this week, I’m going to share with you new stuff I’ve been using, both orally and topically under this family. Kicking off today, I’m going to introduce you to beta-carotenes, which are found in many fruits and vegetables such as carrots, peas, broccoli, pumpkins, peppers, spinach, green lettuces, and orange fruits like apricots, cantaloup melons, peaches, nectarines and papayas.

Oral supplementation
I’ve probably mentioned a couple of times that ingesting food containing beta-carotenes can help protect our skin against the sun. I’ve noticed that to be true because I was taking a supplement containing this for about a year and I did notice a difference to my skin tone. In fact, studies have shown that beta-carotene supplementation protects our skin against sunburn but the protection required a minimum of 10 weeks of supplementation to show effects. (source)

Beta-carotene is also proven to be very safe, as evidenced by its widespread use in the treatment of photosensitivity. The only side effect reported to date is mild gastro-intestinal disturbances (source). However, I understand that excessive intake of beta-carotene can lead to a yellow-orange pigment of the skin that appears similar to jaundice. Good thing though that my daily supplementation of beta carotenes has not caused my skin to become yellowish although this is not the case with topical application.

Topical application
I was very excited to find a study that shows topical application of beta-carotene is great for those with melasma, which means it is also effective for pigmentation (source)! In fact, the study showed that topical application of beta-carotene lotion appears to be effective and safe for melasma although it did qualify that long duration of the treatment is associated with better result. Additionally, I’ve also found data to support that topical beta-carotene protects against infra-red-light-induced free radicals (source).

Which is better?
However, there are some disadvantages to topical application over oral supplementation. It seems that most carotenoids are not stable when exposed to air and light, and will immediately oxidize, losing their antioxidant and protective capacity. Carotenoids are also considered impractical for use in skin care products because of their orange and red colors and this is why I mentioned that topical application has given me a yellow skin tone although it is temporary and can be remedied with other products.

Tomorrow, I’ll cover another form of carotenoid that I’m even more excited about – so stay tuned!

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Comments

  1. says

    Beta-carotene is quite amazing. I have a friend whom told me he went through a bad period of teenage acne, and all he did really was to eat carrots very, very regularly (I assume that means everyday). And true enough, his face is smooth and soft, without scars.

    I haven’t seen any “before” pictures though… but if that were true, then yes, carrots are pretty amazing.

    • sesame says

      Wow, carrots can do that? I didn’t know! But probably he was also using other stuff on top of eating carrots regularly? But I heard from someone in the industry that when he was away for a period of a week or two and only fed on colored vegetables (cos that place offers mostly that), he came away with a very radiant complexion.

  2. says

    This is the second time I’ve read that eating food can alter the skin’s properties! First learnt from Dr Ava Shamban’s video that eating dark red/purple fruits can increase SPF value, blogged about it here if interested to know more. Look forward to more posts from you!
    http://eczemablues.com/2012/01/what-ive-learnt-from-dr-ava-shambans-channel-protecting-skin/

  3. HKLights says

    Sesame, you are right about the discoloration of skin when using a lot of carrots.

    This holiday season, most of my carbohydrate calories (on a Zone diet!) came from carrots, and that had the effect of turning part of my right hand into a “carrot-like” orange color :)

    As I stopped using carrots, the discoloration went away in a few days.

    There’s a whole school of through on how carrots (and other foods) have an impact on the skin and beauty, mostly promoted by an American doctor called Dr Perricone.

    • sesame says

      Zone diet? Sounds interesting. I must go and check out what this diet is about. I do read up Dr Perricone’s recommendations but haven’t read about carrots. Have read his recommendations using salmon straight for 3 days.

  4. says

    carrots was the first thing which came in my mind!!! I shall check out this Dr. Perricone recos which you are talking about!!!

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