WebMD explains that most pimples are caused by an excess build up of sebum that gets trapped in the pores. Bacteria grows and a pimple forms at the sight. One cause of pimples is hormones. An imbalance in the body's horm... More »

www.reference.com Beauty & Fashion Skin Care Skin Blemishes

A closed comedo, or more commonly known as a whitehead, that has been blocked with sebum causes blind pimples to form, according to Brownstone Dermatology Associates. Oil and bacteria can also clog pores and cause blind ... More »

www.reference.com Beauty & Fashion Skin Care Skin Blemishes

Small pimples on the arms are often a result of clogged pores, oil production, dead skin cells and bacteria, according to Mayo Clinic. When glands secrete oil that lubricates skin and hair, hair follicles become plugged,... More »

www.reference.com Beauty & Fashion Skin Care Skin Blemishes

People should not pop pimples, because it can lead to more pimples in the surrounding pores, to infection or to scarring. Pimples usually heal without intervention after three to seven days. More »

www.reference.com Beauty & Fashion Skin Care Skin Blemishes

Acne, which causes pimples on the arms, appears as a result of plugged and inflamed pores, according to Mayo Clinic. Sweat is often a contributor to clogged pores because it traps oil and dead skin cells inside the skin ... More »

Facial pimples form when the sebaceous glands overproduce oil, known as sebum, causing skin inflammation as the pores become clogged with oil and dead skin cells, according to KidsHealth. The pore wall opens and releases... More »

www.reference.com Health Conditions & Diseases Skin Conditions

Remove pimples with home remedies, over-the-counter products and prescription medication. Ice, lemon, honey, crushed aspirin and baking soda are home remedies. Cortisone cream, benzoyl peroxide and salicylic acid are ove... More »

www.reference.com Beauty & Fashion Skin Care Skin Blemishes