This thick-textured moisturizer may feel good over dry to very dry skin, but its formula leaves much to be desired, especially if you’re concerned about mitigating signs of aging. Although this contains some helpful antioxidants, the fact that it’s packaged in a jar means these critical ingredients won’t remain stable after it is opened (see More Info for further details).
In terms of this providing “deep hydration,” it won’t go any deeper than lots of other moisturizers, including many that treat dry skin to a better range of ingredients proven to make a positive difference.
One more issue worth mentioning is that this moisturizer contains numerous fragrance ingredients. Fragrance isn’t skin care and the fragrance ingredients in this product are known to cause irritation—which won’t help dry skin or allow skin to look as youthful as it otherwise could. See More Info for details on why fragrance is a problem for all skin types.
One more point, Biotherm’s claims and advertised ingredients would lead you to believe their products are all about natural formulations, and that is absolutely not the case. These products are steeped in synthetics, some that are great for skin, but also some that are definitely problematic.
- Rich, thick texture feels comforting on very dry skin.
- Jar packaging won’t keep the antioxidants stable during use.
- Overly fragrant formula also contains several fragrance ingredients known to cause irritation.
Why Jar Packaging is a Problem
The fact that this moisturizer is packaged in a jar means the beneficial ingredients won't remain stable once it is opened. All plant extracts, vitamins, antioxidants, and other state-of-the-art ingredients break down in the presence of air, so once a jar is opened and lets the air in, these important ingredients begin to deteriorate. Jars also are unsanitary because you’re dipping your fingers into them with each use, adding bacteria, which further deteriorate the beneficial ingredients (Sources: Free Radical Biology and Medicine, September 2007, pages 818–829; Ageing Research Reviews, December 2007, pages 271–288; Dermatologic Therapy, September-October 2007, pages 314–321; International Journal of Pharmaceutics, June 12, 2005, pages 197–203; Pharmaceutical Development and Technology, January 2002, pages 1–32; International Society for Horticultural Science, www.actahort.org/members/showpdf?booknrarnr=778_5; Beautypackaging.com, and www.beautypackaging.com/articles/2007/03/airless-packaging.php).
Irritation From Fragrance and Fragrant Oils
Daily use of products that contain a high amount of fragrance, whether the fragrant ingredients are synthetic or natural, causes chronic irritation that can damage healthy collagen production, lead to or worsen dryness, and impair your skin’s ability to heal. Fragrance-free is the best way to go for all skin types. If fragrance in your skin-care products is important to you, it should be a very low amount to minimize the risk to your skin (Sources: Inflammation Research, December 2008, pages 558–563; Skin Pharmacology and Physiology, June 2008, pages 124–135, and November-December 2000, pages 358–371; Journal of Investigative Dermatology, April 2008, pages 15–19; Journal of Cosmetic Dermatology, March 2008, pages 78–82; Mechanisms of Ageing and Development, January 2007, pages 92–105; and British Journal of Dermatology, December 2005, pages S13–S22).