Lipophobicity, also sometimes called lipophobia, is a chemical property

Chemical property

A chemical property is any of a material's properties that becomes evident during a chemical reaction; that is, any quality that can be established only by changing a substance's chemical identity...

 of chemical compound

Chemical compound

A chemical compound is a pure chemical substance consisting of two or more different chemical elements that can be separated into simpler substances by chemical reactions. Chemical compounds have a unique and defined chemical structure; they consist of a fixed ratio of atoms that are held together...

s which means "fat

Fat

Fats consist of a wide group of compounds that are generally soluble in organic solvents and generally insoluble in water. Chemically, fats are triglycerides, triesters of glycerol and any of several fatty acids. Fats may be either solid or liquid at room temperature, depending on their structure...

 rejection", literally "fear of fat". Lipophobic compounds are those not soluble in lipid

Lipid

Lipids constitute a broad group of naturally occurring molecules that include fats, waxes, sterols, fat-soluble vitamins , monoglycerides, diglycerides, triglycerides, phospholipids, and others...

s or other non-polar solvent

Solvent

A solvent is a liquid, solid, or gas that dissolves another solid, liquid, or gaseous solute, resulting in a solution that is soluble in a certain volume of solvent at a specified temperature...

s. From the other point of view, they do not absorb fats.

"Oleophobic" (from the Greek

Greek language

Greek is an independent branch of the Indo-European family of languages. Native to the southern Balkans, it has the longest documented history of any Indo-European language, spanning 34 centuries of written records. Its writing system has been the Greek alphabet for the majority of its history;...

 (oleo) "oil") refers to the physical property of a molecule

Molecule

A molecule is an electrically neutral group of at least two atoms held together by covalent chemical bonds. Molecules are distinguished from ions by their electrical charge...

 that is repelled from oil

Oil

An oil is any substance that is liquid at ambient temperatures and does not mix with water but may mix with other oils and organic solvents. This general definition includes vegetable oils, volatile essential oils, petrochemical oils, and synthetic oils....

.

The most common lipophobic/oleophobic substance is water

Water

Water is a chemical substance with the chemical formula H2O. A water molecule contains one oxygen and two hydrogen atoms connected by covalent bonds. Water is a liquid at ambient conditions, but it often co-exists on Earth with its solid state, ice, and gaseous state . Water also exists in a...

.

Fluorocarbons are also lipophobic and oleophobic.

Uses

A lipophobic coating is used on the touchscreen

Touchscreen

A touchscreen is an electronic visual display that can detect the presence and location of a touch within the display area. The term generally refers to touching the display of the device with a finger or hand. Touchscreens can also sense other passive objects, such as a stylus...

s of the Apple iPhone

IPhone

The iPhone is a line of Internet and multimedia-enabled smartphones marketed by Apple Inc. The first iPhone was unveiled by Steve Jobs, then CEO of Apple, on January 9, 2007, and released on June 29, 2007...

 3GS, iPhone 4

IPhone 4

The iPhone 4 is a touchscreen slate smartphone developed by Apple Inc. It is the fourth generation iPhone, and successor to the iPhone 3GS. It is particularly marketed for video calling , consumption of media such as books and periodicals, movies, music, and games, and for general web and e-mail...

, iPhone 4S

IPhone 4S

The iPhone 4S is a touchscreen slate smartphone developed by Apple Inc. It is the fifth generation of the iPhone, a device that combines a widescreen iPod with a touchscreen, mobile phone, and internet communicator. It retains the exterior design of its predecessor, iPhone 4, but is host to a range...

 and iPad

IPad

The iPad is a line of tablet computers designed, developed and marketed by Apple Inc., primarily as a platform for audio-visual media including books, periodicals, movies, music, games, and web content. The iPad was introduced on January 27, 2010 by Apple's then-CEO Steve Jobs. Its size and...

, Samsung

Samsung

The Samsung Group is a South Korean multinational conglomerate corporation headquartered in Samsung Town, Seoul, South Korea...

 Google Nexus S

Nexus S

The Nexus S is a smartphone co-developed by Google and Samsung and manufactured by Samsung Electronics. It was the first smartphone to use the Android 2.3 "Gingerbread" operating system, and the first Android device to support Near Field Communication in both hardware and software...

, Galaxy Nexus

Galaxy Nexus

The Galaxy Nexus is a touchscreen slate Android smartphone developed by a partnership between Samsung and Google. The phone and operating system were developed collaboratively by engineers from both companies. It is the third generation successor to Google’s previous flagship phones, the Nexus One...

, Wave, Wave II

Samsung Wave II S8530

The Samsung Wave II S8530 is the Successor of Samsung Wave S8500 smartphone running the bada 1.2 operating system designed by Samsung, which was commercially released on October, 2010...

, Galaxy S II

Samsung Galaxy S II

The Samsung Galaxy S II is a smartphone running under the Android operating system that was announced by Samsung on February 13, 2011 at the Mobile World Congress. It is the successor to the Samsung Galaxy S, with a different appearance and significantly improved hardware...

, the HTC HD2

HTC HD2

The HTC HD2 , is a smartphone belonging to the HTC Touch family, manufactured by HTC and running the Windows Mobile 6.5 operating system. The phone was designed and manufactured by HTC, and was released in Europe in November 2009, and in December 2009 in Hong Kong...

, Hero

HTC Hero

The HTC Hero is the third phone manufactured by the HTC Corporation for the Android platform, as part of the A series...

 and Flyer

HTC Flyer

The HTC Flyer is a tablet computer by HTC Corporation. It was announced at the Mobile World Congress 2011 and released in May 2011. Unlike other tablets announced at MWC, the Flyer has a single-core 1.5 GHz CPU and runs Android 2.3.3 instead of 3.0...

  to repel fingerprint oils.

3M

3M

3M Company , formerly known as the Minnesota Mining and Manufacturing Company, is an American multinational conglomerate corporation based in Maplewood, Minnesota, United States....

 offers the Vikuiti

Vikuiti

Vikuiti is a 3M Company brand name devoted to optical technology enhancing products.The brand was launched in 1997 and is mainly known in the LCD display market. 3M became a market leader by being the first company to introduce prismatic brightness enhancement films , followed by multilayer based...

screen protection film DQC160 with lipophobic coating for mobile devices.