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Effets secondaires astaxanthine par voie topique.

Astaxanthin: Possible side effects on skin usage?

A potent antioxidant, astaxanthin is a prevalent active ingredient in skincare. It boasts numerous benefits, particularly in mitigating the phenomenon of premature skin ageing. But what about the potential side effects associated with the use of astaxanthin on the skin?

Summary
Published January 29, 2024, by Manon, Head of Scientific Communication — 3 min read

Astaxanthin, in brief.

Theastaxanthin is a liposoluble natural pigment from the carotenoid family. With a colour ranging from orange-red to pink, it is responsible for the colouring of many seafoods. Indeed, it is found in krill, crustaceans, plankton, salmon, pink bream and trout. However, its main natural source is a micro-algae, called Haematococcus pluvialis.

It shares many metabolic and physiological parameters in common with beta-carotene, zeaxanthin, and lutein. The presence of hydroxyl and keto terminations on the ionone groups, endows it with antioxidant properties that are higher than other carotenoids. Moreover, it has the unique characteristic of never becoming pro-oxidant and it does not convert into vitamin A in the body.

Thanks to its properties, this liposoluble pigment has established itself as a favoured ingredient in skincare formulas. Astaxanthin isnow a key ally against skin ageing: it prevents wrinkles and fine lines, hydrates the skin, protects it from UV rays, and maintains the skin's tone and elasticity. But can its topical use cause any adverse effects?

Are there any contraindications to the topical use of astaxanthin?

To date, there are no known side effects from the topical use of astaxanthin. It is a compound that is suitable for all skin types. However, usage precautions are necessary.

The effect of astaxanthin during pregnancy and breastfeeding is not yet very well understood. As a precaution, the use of astaxanthin in topical application should be moderate for pregnant and breastfeeding women.

Are there precautions for the topical use of astaxanthin?

It is possible to be allergic to astaxanthin. Certain skin types exhibit a sensitivity to Hematococcus pluvialis, the primary natural source of astaxanthin. Therefore, it is recommended to discontinue the use of the skincare product if irritation, inflammation or itching occur on the skin.

To ensure that you are not allergic to astaxanthin, we advise you to carry out a tolerance test beforehand. To do this:

  1. Apply a small amount of the product in the crook of your elbow or behind the ear;

  2. Wait for 24 hours and observe the area. If it remains unblemished, this indicates that your skin tolerates the astaxanthin or the skincare product containing it. However, discontinue use if you experience warming, blistering, itching, redness, or any other allergic reactions.

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