Rosacea, Acne HomePage Click Here

---

 

Acne & Rosacea aggravating Substances

 

Lanolin- One of the most common and well known ingredients in cosmetics is lanolin.  It it derived from sheep wool and is, in fact, oil from the skin of the sheep.  These oils are not dissimilar to the fatty acids already found in human skin.  These fatty acids can cause acne in those individuals who have a natural affinity to the disease.

 

Isopropyl Myristate- This acne causing ingredient is found in many cosmetics.  Its purpose is to apply "slip", which will make it go on the skin smoother and cause a slick sheer feel.   There are a number of chemicals similar to isopropyl myristate.  These are a few of these chemicals;  legion, isopropyl palmilate, isostearate, butyl stearate, octyl stearate, and isocetyl stearate

 

 

D & C Pigments- Some of the approved D & C red dyes which are derived from coal tars are known to be comedogenic.  Some of these red pigments such as D & C Red #9 and D & C Red #40 have been tested for comedogenicity and were found to be the most troublesome of the various red pigments.

 

 

 

Is your cosmetic really oil free?

Much of what causes the damaging effects known as acne cosmetica is excess oil.   On the assumption that sebum is a beneficial component of the skin, chemists have set out to replicate this substance.  In doing so, stearic acid and isopropyl myristate have been commonly used in cosmetics.  These chemical substances can be even more potent than an excess of natural sebum in causing acne.

Many cosmetics and toiletry products make claims of being "oil fee" and in the classic legal sense, this is true.  The "oil free" claim is very misleading because the oil substitutes that are used in these products are synthetic and are often more harmful than the excess sebum found in the skin that can block pores.

Which type of cosmetics are most offensive to the skin?

Generally speaking the most acne causing cosmetics are foundation makeup, pressed powders, thick creams, and blushers.  It is necessary to check the ingredients listed on all of your skin care products since acne causing ingredients are not limited to these classes of cosmetics.  Comedogenic ingredients can even be found in suntan lotions and creams.

Moisturizers can also be a source of acne producing substances.  In order to make these moisturizing products smooth on the skin easily, they are often manufactured with ingredients such as acetylated lanolin, searic acid, and cetyl alcohol.  All of these ingredients are considered to be comedogenic.  Most dermatologists recommend moisturizers that have a base of petrolatum or mineral oil.

 

 

 

Scale of Comedegenic & Irritant Potential of Cosmetic Ingredients

Graded from 0 (Least) to 5 (Most)

Lanolins

Ingredient                                  Comedogenic     Irritant

PEG 16 Lanolin                         4                              3

Acetlyated Lanolin                     4                              0

Ethoxylated Lanolin                   3                              0

Anhydrous Lanolin                     2                              0

Lanolin Alcohol                           2                              1

Lanolin Oil                                   1                              0

 

Acids, Esters, & Ethers

Ingredient                                  Comedogenic     Irritant

Stearic Acid                               3                              0

Isopropyl Myristate                      5                              0

Myristyl Myristate                        5                              0

Myristyl Lactate                           4                              2

Isopropyl Neonpentanoate         3                              3

Isopropyl Isotearate                    5                              0

Isopropyl Palmitate                     4                              0

Butyl Stearate                              3                              0

Decyl Oleate                                3                              0

Isodecyl Oleate                           4                              0

2-Elyhyl Hexyl Palmitate             4                              0

PPG2 Myristyl Propionate         4                              3

Diocetyl Succinate                      3                              2

Glyceryl 3 Distearate                  4                              0

Ascorbyl Palmitate                     2                              0

Disopropyl Adipate                    0                              0

Ethylene Glycol Monostearate   0                              0

Polyethelene Glycol (PEG) 400                               1                                    0

PEG 75 Lanolin                          3                              2

PEG 5 Soya Sterol                     3                              2

PEG 8 Stearate                          3                              1

PEG 100 Stearate                      1                              0

PEG 100 Distearate                  2                              0

PEG 150 Distearate                  2                              0

PEG 200 Diluarate                     3                              0

Disodium Monocleanido PEG 2

Sulfosuccinate                            4                              2

Laureth 4                                     5                              4

Laureth 23                                   3                              0

Steareth 2                                    2                              2

Steareth 10                                  4                              3

Steareth 20                                  2                              1

Steareth 100                               0                              0

 

Alcohols, Glycols, Sugars

Ingredient                                  Comedogenic     Irritant

SD Alcohol 40                            0                              0

Isopropyl Alcohol                        0                              0

Cetyl Alcohol                              3                              2

Oleyl Alcohol                               4                              2

Hexadecyl Alcohol                     5                              2

Cetearyl Alcohol –

Cetearth 20                                 4                              0

Propylene Glycol                         0                              0

Butylene Glycol                            1                              0

Hexylene Glycol                           2                              1

PG Caprylate/Capric                  1                              0

PG Dipelargonate                      2                              0

Carboxymethyl Cellulose           1                              0

Carboxypropyl Cellulose            1                              0

Magnesium Aluminum

Silicate                                        0                              0

Carbomer 940                            1                              0

Bentonite                                     0                              0

Kaolin                                           0                              0

Sorbitol                                        0                              0

Sorbitan Laurate                         1                              0

Sorbitan Sesquinoleate             3                              0

Glycerin                                        0                              0

Glyceryl Stearate NSE               1                              0

Glyceryl Stearate SE                  3                              2

 

Natural Oils

Ingredient                                  Comedogenic     Irritant

Cocoa Butter                              4                              0

Coconut Butter                            4                              0

Crisco                                          3                              0

Sesame Oil                                 3                              0

Avocado Oil                                 3                              0

Mink Oil                                        3                              1

Soybean Oil                                 3                              0

Wheat Germ Glyceride              3                              0

Sulfated Castor Oil                     3                              2

Cotton Seed Oil                          3                              2

Peanut Oil                                    2                              0

Olive Oil                                       2                              0

Sandalwood Seed Oil                3                              2

Almond Oil                                   2                              0

Apricot Kernel Oil                       2                              0

Castor Oil                                    1                              0

Hydrogenated Castor Oil           1                              0

Chaulmoogra Oil Squalene       1                              0

Safflower Oil                                0                              0

Sunflower Oil                               0                              0

Mineral Oil                                   0                              0

Petrolatum                                   0                              0

 

Pigments

Ingredient                                  Comedogenic     Irritant

D&C Red #4                              2                              1

D&C Red #9                              1                              0

D&C Red #21                            2                              0

D&C Red #30                            3                              2

D&C Red #36                            3                              0

D&C Red #40                            2                              2

Ultramarine Violet                      0                              0

Iron Oxides                                 0                              0

Carmine                                       0                              0

Chromium Hydroxide                 0                              0

Titanium Dioxide                         0                              0

 

Detergents

Ingredient                                  Comedogenic     Irritant

Sodium Lauryl Sulfate               4                              3

Polysorbate 20                           0                              0

 

Sterols

Ingredient                                  Comedogenic     Irritant

Cholesterol                                 0                              0

Soya Sterol                                  0                              0

Choleth 24                                   0                              0

 

Vitamins & Herbs

Ingredient                                  Comedogenic     Irritant

PG Monostearate                      3                              0

Tocopherol                                 3                              2

Black Walnut Extract                  0                              0

Papain                                         0                              0

 

Preservatives

Ingredient                                  Comedogenic     Irritant

Methyl Paraben                          0                              0

Allatonin                                      0                              0

 

Waxes

Ingredient                                  Comedogenic     Irritant

Candelilla Wax                           1                              0