The Shift to Waterless Cosmetics
By Natasha Spencer 11-Apr-2018
In our sustainability focus, we delve into the metamorphosis of water in beauty and personal care by looking at the demand for waterless product R&D efforts and releases…<Read More>

Here’s an interesting trend that will affect cosmetic chemists and formulators in the future. More and more, natural ingredients are replacing standard cosmetic raw materials. What will this mean?…<Read More>

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BeautyWorld, Middle EastDubai_Expo2014-1

27-29 May 2014, Dubai

TeaDict. Co., Ltd. is the exhibitor. Our booth number is SAE19. TeaDict. is very welcome to see you at our exhibition booth.



According to the FDA law, cosmetic and drugs are defined by the following contents

( All original definations, please refer to the FDA official site: )


How does the law define a cosmetic?

The Federal Food, Drug, and Cosmetic Act (FD&C Act) defines cosmetics by their intended use, as “articles intended to be rubbed, poured, sprinkled, or sprayed on, introduced into, or otherwise applied to the human body…for cleansing, beautifying, promoting attractiveness, or altering the appearance” [FD&C Act, sec. 201(i)]. Among the products included in this definition are skin moisturizers, perfumes, lipsticks, fingernail polishes, eye and facial makeup preparations, cleansing shampoos, permanent waves, hair colors, and deodorants, as well as any substance intended for use as a component of a cosmetic product.

How does the law define a drug?

The FD&C Act defines drugs, in part, by their intended use, as “articles intended for use in the diagnosis, cure, mitigation, treatment, or prevention of disease” and “articles (other than food) intended to affect the structure or any function of the body of man or other animals” [FD&C Act, sec. 201(g)(1)].



How Do Moisturizers Work?

Traditionally, moisturization was believed to inhibit transepidermal water loss (TEWL) by occlusion. Water originates in the deeper epidermal layers and moves upward to hydrate cells in the stratum corneum, eventually being lost to evaporation. Occlusive moisturization, then, prevents the dehydration of the stratum corneum.

Much more is now known about the epidermis, and in particular, the stratum corneum. The “bricks and mortar” model suggests that its role is as an active membrane. Loss of intercellular lipids, i.e., the ceramides, cholesterol and fatty acids that form the bilayers, damages the water-barrier function. The stratum corneum then calls into action repair mechanisms.1

The Natural Moisturizing Factor (NMF), a natural mixture of amino acids, lactates, urea and electrolytes, which help the stratum corneum retain water is also now known.2 Dry skin is noted when the moisture content is less than 10%, and there is loss of continuity of the stratum corneum.
Scientifically, the moisturizing treatment involves a 4-step process:
• Repairing the skin barrier
• Increasing water content
• Reducing TEWL
• Restoring the lipid barriers’ ability to attract, hold and redistribute water.
This article is excerpted from Skin Therapy by C. W. Lynde, MD, FRCPC
Toronto Hospital, Western Division, Assistant Professor, Department of Dermatology, University of Toronto, Toronto, Ontario, Canada