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Is it safe to use cosmetics containing nanoform silica?

 

Glossary over Is it safe to use cosmetics containing nanoform silica?

Atmosphere

The mass of air surrounding the Earth.

The atmosphere consists of nitrogen (78%), oxygen (21%), and traces of other gases such as argon, helium, carbon dioxide, and ozone.

The atmosphere plays an important role in the protection of life on Earth; it absorbs ultraviolet solar radiation and reduces temperature extremes between day and night. (Source: GreenFacts)

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Carcinogen

A substance, factor or situation that causes or induces cancer. (Source: GreenFacts )

Cell

The basic subunit of any living organism; the simplest unit that can exist as an independent living system. There are many different types of cells in complex organisms such as humans, each with specific characteristics. (Source: GreenFacts)

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Exposure

Contact of the cells of an organism with a substance, micro-organism or radiation. In the case of humans, this may involve contact with a substance or agent by swallowing, breathing, or through the skin or eyes. Exposure may be short-term [acute exposure], of intermediate duration, or long-term [chronic exposure].

Exposure can be divided into external and internal.

External exposure refers to the whole dose to which an organism is exposed.

Internal exposure refers only to that fraction of the initial chemical dose that is absorbed and distributed throughout the body via systemic circulation. (Source: GreenFacts)

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Genotoxic

Toxic (damaging) to DNA. Substances that are genotoxic may bind directly to DNA or act indirectly leading to DNA damage by affecting enzymes involved in DNA replication, thereby causing mutations which may or may not lead to cancer or birth defects (inheritable damage). Genotoxic substances are not necessarily carcinogenic. (Source: GreenFacts)

Nanomaterial

Material with one or more external dimensions, or an internal structure, at nanoscale and which could exhibit novel characteristics compared to the same material at a larger scale. (Source: based on SCENIHR's opinion on the  appropriateness of existing methodologies to assess the potential risks associated with engineered and adventitious products of nanotechnologies )

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Nanometre

Unit of length equal to one millionth of a millimetre (10-9 m). (Source: GreenFacts)

Nanoparticle

Particle with one or more dimensions of the order of about 100 millionth of a millimetre (100 nm) or less.

(Note: In the SCENIHR  opinion on the appropriateness of existing methodologies to assess the potential risks associated with engineered and adventitious products of nanotechnologies, nanoparticles are considered to have two or more dimensions at the nanoscale) (Source: GreenFacts )

Pregnancy outcomes

Results of conception and ensuing pregnancy, such as sex ratio, birth weight, spontaneous abortion, congenital malformations, lower birth weight, preterm delivery or stillbirth. (Source: GreenFacts)

Risk

The probability that something will cause injury or harm. (Source: ATSDR Glossary of Terms  )

Scientific Committee on Consumer Safety

The SCCS provides opinions on questions concerning all types of health and safety risks (notably chemical, biological, mechanical and other physical risks) of non-food consumer products (for example: cosmetic products and their ingredients, toys, textiles, clothing, personal care and household products such as detergents, etc.) and services (for example: tattooing, artificial sun tanning, etc.). For further information on the SCCS, see:

http://ec.europa.eu/health/scientific_committees/consumer_safety/index_en.htm 


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