A lot of people may think that this is over reacting, however I want to remind everyone of some of the contagious virus' and bacteria that can be spread by makeup & their crafters:
Staphylococcus Epidermidis
Staphylococcus epidermidis is a form of staph bacteria that has been found on lipsticks, eyeshadows and eyeliners during laboratory testing. While this bacteria often is found naturally on human skin, for those with a compromised immune system--due to a severe illness, old age or a chronic illness--may develop an infection. Some strains of this bacteria are resistant to antibiotic treatment and can severely affect the intestines if left untreated.
Staphylococcus Warneri
Another member of the staphylococcus bacteria group, Staphylococcus warneri also is found on the skin of humans and animals. While it may not cause adverse reactions in those with healthy immune systems, it can cause severe reactions and illness in those with compromised immune systems. In the most extreme cases, this bacteria is associated with endocarditis, which is damage to the heart valves.
Pseudomonas Aeruginosa
Pseudomonas aeruginosa is a common bacteria found in soil, water and on the skin and has been associated with inflammation, rash and in severe cases, sepsis--a serious infection that can cause organ failure. Pseudomonas aeruginosa that live on a mascara wand that can nick the eye or penetrate into the soft tissues or membranes of the eye.
Methicillin-Resistant Staphylococcus Aureus
One of the most serious forms of bacteria, methicillin-resistant Staphylococcus aureus (MRSA), can lurk on old makeup and cause an infection, such as dermatitis or pink eye, that can resist antibiotic treatment. This bacteria is considered very dangerous because the infection can be easily spread. When applying makeup, MRSA present in the makeup can enter a pimple, open cut or the mucous membranes of the eye and nose. Initial signs of infection including redness, inflammation and heat over the infected area. If you suspect you may be infected with MRSA, seek immediate treatment.
(source: Livestrong.com)
And, some of the infections you can get:
conjunctivitis
"MayoClinic.com defines conjunctivitis as an infection of the membrane that lines the eyelid and a portion of the eyeball. More commonly known as pink eye, this condition causes the small blood vessels in the membrane to enlarge. This causes the distinctive pink or red cast that gives this condition its name. Although this condition usually affects children, adults who use cosmetics can develop conjunctivitis if bacteria come in contact with the membrane. To reduce the risk of developing conjunctivitis, avoid sharing cosmetics with others and throw away eye cosmetics if they smell bad." (livestrong.com)
Cold Sores
"Unlike bacterial infections such as pink eye, you cannot get rid of cold sores with medication, since they are caused by the herpes simplex virus. Usually appearing as small, fluid-filled bumps on the skin near the mouth and lips, cold sores can appear up to 20 days after you are exposed to a person carrying the herpes simplex virus [source: Mayo Clinic]."
Keratitis
"Microbial keratitis, also known as a corneal infection, occurs when bacteria come in contact with the cornea. The cornea covers the pupil and iris of the eye and has a domed shape. This condition usually occurs when bacteria contaminate contact lenses. If you put contact lenses in after using makeup, the bacteria in the makeup may contaminate one or both of your lenses. This allows the bacteria to attack the cornea, causing eye drainage, decreased vision, puffy eyelids and light sensitivity. Visit an ophthalmologist if you experience these symptoms, as keratitis may lead to blindness if not treated properly." (livestrong.com)
Stye
"The University of Michigan Kellogg Eye Center defines a stye as a small lump in the eyelid. This lump appears when chronic inflammation affects the meibomian glands, which produce oil. Usually, styes form as the result of trapped oil, but infection can also cause a stye. The glands can trap bacteria from cosmetic products, leading to inflammation and tenderness. Treatments for a stye include warm compresses, antibiotic drops, steroid drops, steroid injections and surgical drainage." (livestrong.com)
Blepharitis
"Blepharitis, or an infection of the eyelid, can occur as the result of a bacterial infection. If staphylococcus bacteria contaminate a cosmetic product, use of the product transfers the bacteria to the eye and increases the risk of blepharitis. Blepharitis causes light sensitivity, blurred vision, eye discharge, pain and redness of the eye. If the bacteria enter the meiobian glands, recurrent conjunctivitis may also occur." (livestrong.com)
Impetigo
"impetigo is a common and highly contagious skin infection that mainly affects infants and children. Impetigo usually appears as red sores on the face, especially around a child's nose and mouth, and on hands and feet. The sores burst and develop honey-colored crusts.Treatment with antibiotics is generally recommended to help prevent the spread of impetigo to others. It's important to keep your child home from school or day care until he or she is no longer contagious — usually 24 hours after you begin antibiotic treatment[source: Mayo Clinic]."