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A substance added to another to increase its suitability (e.g., in sealant placement, acid etchant is placed on the enamel to prepare it for bonding with the sealant).


n 1. an additive substance used to increase the effectiveness of another substance.
2. a substance added to enamel that improves a sealant's ability to adhere.


involved in improving physical condition.

livestock conditioner
a person involved in special feeding programs for heavy producing dairy cows or animals being prepared for shows, exhibitions, fairs and sale. Usually done at the conditioner's premises because of the secret nature of the materials and procedures. Represents a potential health threat from infectious disease.
soil conditioner
agents such as gypsum added to clay soil to improve its physical state.

Patient discussion about conditioner

Q. Does using hair shampoo and conditioner too often or in too excess cass hair loss?

A. Chemicals used for dying, tinting, bleaching, straightening or permanent waves can cause hair to become damaged and break off if they are overused or used incorrectly. Overstyling and excessive brushing also can cause hair to fall out if the hair shaft becomes damaged.
so it really depends on which shampoo you are using and what are the materials inside it. i heard from more then one hair dresser that conditioner can cause it and shampoo for dry hair that also contains conditioner. but it could be just an urban legend...

More discussions about conditioner
References in periodicals archive ?
From Window AC's to Portable Air Conditioners, Haier Offers the Answer --
The store has window air conditioners ranging from $227 to $500 and installation kits are included.
On account of rising per capita income, changing consumer lifestyle and the country experiencing extreme hot and humid climate for most part of a year, the demand for air conditioners in India is expected to rise during the forecast period.
In 2010, China's major air conditioner brands including Midea, Gree, Haier, Hisense, AUX, Kelon and Chigo took up 86.
Extreme climatic conditions, rising income levels and rapidly growing infrastructure to boost the demand for air conditioners in Saudi Arabia through 2013
QI read somewhere about a shampoo and conditioner that is reckoned to be one of the world's most expensive because it's got caviar and champagne in its ingredients.
Japanese air conditioner maker Daikin Industries Ltd.
Most importantly, the monthly charges remain collectible during the entire year, even if the air conditioner is removed by the tenants during the winter months.
Whereas old style power conditioners were large and expensive, a new breed of inexpensive electronic power conditioner is being deployed today in the computer room.