As a cosmetics chemist and overall skeptic, I debunk common myths surrounding cosmetics, health and science-y topics. Think critically! It's good for you!

Thursday, June 12, 2014

How is this healthy again?




There is a recipe currently going around Pinterest. I've seen it repinned at least 10 times now and every time I see it I think to myself: Is that really "healthy"? This is it. The pin says "When you need a healthy sweet: So good. Just five ingredients- coconut oil, cocoa powder, almond/peanut butter, honey, vanilla.

I'm trying to lose weight and I like chocolate so a healthy chocolate SOUNDS great. But when I read the recipe it didn't really sound all that healthy. In fact, it didn't sound healthy at all. Coconut oil (fat), cocoa powder (ok, I guess), almond butter (fat and a little protein), honey (sugar) and vanilla (flavor). So.... fat, sugar and flavor. Then I thought, well is it better for me than a Reese's Cup because I love a Reese's Cup for a treat sometimes. So I entered the recipe into my favorite recipe site (www.food.com) because they calculate the nutrition facts from the recipe. Here are the nutrition facts for this recipe.

Calories 210.5
  Calories from Fat 168  
Total Fat 18.7 g                  28%
  Saturated Fat 10.3 g          51%
Cholesterol 0.0 mg               0%
Sodium 29.3 mg                   1%
Total Carbohydrate 12.0 g   4%
Dietary Fiber 2.7 g              11%
Sugars 7.6 g                        30%
Protein 3.6 g                        

Compare that to the nutrition facts for a Reese's Cup.

Calories 80
  Calories from Fat 45
Total Fat 5.0g                             8%
 Saturated Fat 2.0g                  10%
 Trans Fat 0.2g
Polyunsaturated Fat 0.8g
Monounsaturated Fat 2.0g
Cholesterol 5mg                        2%
Sodium 55mg                            2%
Total Carbohydrates 9.0g         3%
  Dietary Fiber 1.0g                   4%
  Sugars 8.0g
Protein 2.0g

So the healthy chocolate has 2.5X the calories and nearly 4X the fat (including 50% of the daily allowance of saturated fat) of the Reese's Cup? I'm not a dietitian or even really in to health and fitness but this one seems 100% bogus to me!

Skin Care: Anti-Aging Products

Wrinkles and aging skin are a fact of life. There are many things that contribute to aging skin:

  1. Sun Damage: Like it or not, repeated exposure to UVA & UVB rays whether from the sun or a tanning bed dramatically speeds up the aging process of the skin. UVA rays penetrate more deeply than UVB rays. UVA is responsible for destruction of collagen and elastin and when they are destroyed, your skin gets saggy and wrinkled. UVB rays are primarily responsible for sunburns. Unless your sunscreen product say "Broad Spectrum coverage, it will only block UVB rays not UVA. Make sure you are blocking both.
  2. Genetics: People with darker skin tones are less susceptible to wrinkles caused by sun damage.
  3. Hormones: Women who have gone through menopause frequently begin to notice thinning and more saggy skin due to the hormonal changes. 
  4. Getting Old: Gravity is a bitch. Every year you are on this earth gravity pulls down on your skin and stretches it more.
  5. Muscle Movement: The muscles you use the most, be it smiling, frowning or squinting into the sun, wrinkle the fastest and the deepest. 
This is certainly not an exhaustive list but these are some of the major causes of aging. Now I'm going to tell you the bad news

There isn't a miracle vitamin, plant extract, or any other ingredient anywhere in the world that can change one wrinkle on your face. Stop looking for one ingredient that does it all, because that just leads to disappointment. There are thousands of anti-wrinkle products available around the world with claims that are either misleading or just plain false about what they can do for your skin.

So now that we have that out of the way- what can we do to care for aging skin?

  1. Wear broad spectrum sunscreen every day before going in the daylight. EVERY day, not just in the summer, or on days you're at the amusement park, 365 days a year. Sun has been proved to be a huge contributing factor to aging and an ounce of prevention is worth a pound of cure.
  2. Exfoliate! Removing the thickened outer layer of skin can increase collagen production and help your skin form a better structure. You don't have to exfoliate with a scrub (indeed many commercially available products have particles that are too large or too hard to do anything other that tear at your skin). You can also exfoliate with AHA (alpha hydroxy acids like glycolic acid or lactic acid) and BHA (beta-hydroxy acids like salicylic acid). As I discussed in my post about acne, any product using AHAs or BHAs to exfoliate your skin must have a pH between 3 and 4. Anything outside this range is either too irritating or simply won't work. 
  3. Retin-A, Renova, Avita and Tazorac are prescription topical products to improve sun damaged or wrinkled skin. These products are cell-communicating ingredients. They can "talk" to your skin and tell it what to do. Niacinamide (Vitamin B3 or nicotinioic acid) is a great non prescription cell communicating ingredient. It increases the level of cerimide in the skin which helps regulate water loss and stimulates microcirculation in the dermis. Some other cell communicating ingredients to look for include: milk thistle, Filipendula glaberrima (Nakai root extract), retinyl palmitate, retinol, peptides, and phospholipids. Using cell communicating ingredients in skin care is in it's infancy. This area of research is sure to expand in the coming years. 
  4. Maintain your skin's barrier. Think of the barrier as the mortar in between the bricks. Technically known as the extracellular matrix, the skin's barrier helps to keep your skin soft, smooth, moist and of course keep the bad stuff out. When the barrier is damaged, you get rough, dry and dehydrated looking skin. Maintaining the barrier can be done in several ways. Don't use water that is too hot or cold. Don't using products that contain irritating ingredients. Your skin should NEVER burn or tingle when using a skin care product. It doesn't mean it's working- it means it's irritating your skin. Avoid unprotected sun exposure (I know, I'm beating a dead horse here but it really is important). Some important skin-repairing ingredients to look for include ceramides, lecithin, glycerin, polysaccharides, hyaluronic acid, sodium hyaluronate, sodium PCA, amino acids, cholesterol, glycerol, phospholipids, glycosphingolipids, glycosaminoglycans, glycerides, and fatty acids.
  5. Use antioxidants. This is a broad statement that covers a vast amount of ingredients. Antioxidants reduce inflammation, repair DNA damage, restore the skin's surface barrier, help defend against environmental stress, allow skin to build more collagen, and improve skin's ability to heal.
The price of the product means nothing. Good and bad skin care products come in all price ranges. Look at the ingredients. Compare it to the things that are needed to maintain healthy skin. Maintaining healthy skin is the only way to prevent and reduce the appearance of wrinkles. 

There is no one BEST ingredient. There are a lot of great ones but don't buy a product because of it's claims, buy it because it's a well formulated product that will make you look and feel great.

Skin Care: Acne Prone Skin

Acne care is a topic near and dear to my heart. As a teenager, I had relatively little acne. I started having more and more problems with acne as I got older. It was only recently that I realized my problems are entirely hormonal, a side effect of my PCOS and there is very little I can do to stop my skin from being oily and breaking out nearly every day. That doesn't stop me from trying to control my skin though. Since about 2008, I've tried just about every expensive and inexpensive option for acne control including ProActiv, Neutrogena Skin ID, hundreds of drugstore options and since starting with Bonne Bell, many iterations of my own creations with the "latest and greatest" from raw material suppliers. Through it all I have gained a lot of insight into what acne prone skin needs, and what it doesn't.

The most important thing to remember about acne prone skin is to avoid irritation. Irritation leads to more breakouts and slower healing. Unfortunately, many of the things that are commonly associated with skin care for acne prone skin are actually irritants and only make acne worse. One of the biggest is alcohol. You will see this in astringents, spot treatments, even face washes. Alcohol is way too drying for everyone's skin, even the most oily. Alcohol is actually counterproductive to oily skin because it over dries the skin and actually increases oil production. It's truly a relic from when it was thought that the best way to get rid of a zit was to dry it out as quickly as possible. Alcohol has no place in skin care products.

Other irritants commonly used in acne products are menthol/ peppermint extracts because they give a cooling sensation that many people believe means it's "working". There are many other fragrant botanicals that are irritants to skin as well. Witch hazel, eucalyptus, fennel, cinnamon, citruses and cloves are all too irritating for most skin types.

It's important to not over cleanse your face when you are trying to control acne. Wash your face twice a day (unless you are formulating a new skin care line and you are your own test subject, then wash your face 10 times a day and have your worst breakout in years). Wash your face with lukewarm water, not hot. Hot water is irritating to your skin and over time can lead to burst capillaries and splotchy redness on your face.

So now that I've covered all the things you SHOULDN'T use on your acne prone skin, what should you use? Basically for a face wash you want something gentle and mild that cleans off excess dirt, oil and makeup and doesn't irritate your skin. You will commonly find face washes with salicylic acid but really, salicylic acid in a face wash is a waste. Salicylic acid is a chemical exfoliant. It is known as a beta hydoxy acid or BHA. It works by sloughing off dead skin cells and clearing out dirt from your pores. However it only works if it stays on your skin. A face wash is on your skin for maybe a minute, tops. That is not nearly enough time for salicylic acid to do anything. So save that for later. Clean & Clear Foaming Facial Cleanser, Sensitive Skin is a gentle foaming face wash without irritating ingredients.

Now it's time for your BHA. Salicylic acid can only function as an exfoliant in the very narrow pH range of 3-4. If the product is outside of that range, it really won't be helpful at all. Unfortunately, unless you walk around with your pocket pH meter you have no idea if the chemist who formulated that product knew that or cared enough to bother to specify a pH for the product. Neutrogena Oil-Free Stress Control Acne treatment  is a well formulated product, in the correct pH range, with a good level of salicylic acid- 2%. Use your BHA product over your whole face, not just on your current zits. Like I said, salicylic acid exfoliates and clears dirt and oil out of your pores- thus preventing future breakouts when used over your whole face.

Basically that's all that you need to do to control most cases of acne. If your acne doesn't show signs of improvement with this type of treatment, talk to your doctor. It could be caused by hormones, in which case birth control pills have been shown to be very effective for controlling acne. Doctors can also prescribe antibiotics or topical steroids which are also effective at controlling more severe cases of acne.

Skin Care Myths: Propylene Glycol

Every one has something that just gets under their skin. For me, it's spreading myths and misinformation about harmless chemicals. Over the past couple of months I have been working on an all natural skin care line for my company. All natural cosmetics are not at all important to me, I'm much more concerned about making skin care products that don't contain irritating ingredients, have ingredients with proven research for their benefits and are well formulated products. However, natural is the buzz word, and I've got to earn my paycheck.

Ecocert guidelines prohibit the use of glycols because they are derived from petroleum. Well Bossman talked to a supplier who had an Ecocert approved Propylene Glycol and he ordered a sample of it. I should mention Bossman is not a chemist, he's a meteorologist  He started in QC, moved to R&D then to manager. His chemistry knowledge is fairly limited. So he handed me the literature for the Ecocert Propylene Glycol and I looked it over and found that the INCI was propanediol. Propylene Glycol exists as two stereoisomers.
1,2-propanediol:

1,3-propanediol:

The difference between the molecule is which carbon the second -OH group is bonded to. Standard propylene glycol is a raecemic mixture (equal parts) of the two isomers. The Ecocert propanediol is stereospecific to the 1,3-propanediol. Bossman and I got in to a big disagreement about this because he would not accept that the propanediol was not (for all intents and purposes) the same as the propylene glycol that we use every day. There are minor differences but they serve the same purpose and have essentially the same properties, especially for our products. So I did some research on exactly why customers felt we needed to avoid propylene glycol in cosmetics. I was truly surprised at what I found people saying about poor little propylene glycol.

This site claims the propylene glycol is  linked to cancer, developmental/ reproductive issues, allergies/ immunotoxicity, neurotoxicity and endocrine disruption. It has been found to provoke skin irritation and sensitization in humans as low as 2% concentration, while the industry review panel recommends cosmetics can contain up to 50% of the substance. It goes further and claims that it alters the structure of the skin by allowing chemicals to penetrate deep beneath it while increasing their ability to reach the blood stream. Even the EWG (which I should mention, I hate, because they are fear mongers) isn't that extreme. They only list propylene glycol as a 3 (moderate hazard) and claim that it is a skin sensitizer. Honestly it's just absurd. 

Propylene glycol is a humectant, which means it draws water to your skin, acting as a moisturizer. It also improves freeze/ thaw stability of finished products by preventing them from freezing as hard. It is classified by the FDA as GRAS (generally recognized as safe) for all food applications. Unlike it's cousin, ethylene glycol, propylene glycol is easily metabolized by the liver and it does not accumulate in the body over time. The acute oral toxicity of propylene glycol is very low, ingestion of large quantities in a very short period of time are required to achieve a toxic concentration in the blood. I could not imagine a situation in which a cosmetic formula would use 50% propylene glycol as the first website mentioned, it's usually used at around 2-3% in a finished lotion formula. Prolonged contact with propylene glycol is essentially non-irritating to the skin. Undiluted propylene glycol is minimally irritating to the eye, and can produce slight transient conjunctivitis (the eye recovers after the exposure is removed). Exposure to mists may cause eye irritation, as well as upper respiratory tract irritation. Inhalation of the propylene glycol vapors appears to present no significant hazard in ordinary applications. Both experimental and anecdotal evidence to date indicate propylene glycol to be completely non-carcinogenic. In a very interesting study, some rats were fed propylene glycol at amounts equal to 5% of all of their food intake every day for two years, which is a pretty huge volume over a large portion of their lifetime. There were no observable effects on their health or behavior. 

There is simply an overwhelming amount of evidence that indicates that propylene glycol is a perfectly safe ingredient for all food and cosmetic applications. The Agency for Toxic Substances and Diseases Registry issued this statement regarding propylene glycol. Unless you are one of the very few people with an allergy to propylene glycol, it's just not something to be concerned about. 

Skin Care Myths: Never Pop a Zit

I'm sure you've heard it before- never pop a pimple. Well I'm about to burst that little bubble. It's ok to pop a pimple if you do it correctly. If you do it incorrectly you risk scabs, increased healing time and permanent scars. However, done correctly, popping a pimple reduces inflammation, healing time and gets rid of the ugly white bump that is so hard to cover up. When you get a facial at a spa, the aesthetician will do extractions on clogged pores, which is what you want to do.

Before you start, make sure you are dealing with the correct type of blemish. Deep cystic acne cannot be popped safely without scarring. This method will work well on blackheads or white heads that are raised and inflamed. It's also easier to do when the zit is on a hard part of your face like the jawline, chin, forehead or nose area. It's more difficult to do correctly in the fleshy parts like your cheeks.

Here's how to correctly pop a pimple.
1) Buy a comedone extractor. This is what they look like:
 The loop end is what you are going to use to gently remove the pus from the clogged pore. You can use the needle end to gently pierce the top of the zit to make it easier to remove.

2) Wash and dry your face. It can be helpful to gently scrub with a wash cloth to remove dead skin cells on the surface. Don't use hot water- no need to inflame the pimple more than it already is.

3) Center the loop over the head of the pimple, press down gently and slide the loop over the pimple. Repeat if necessary but don't press down harder. You can also try piercing the top of the pimple with the needle and then try sliding the extractor over the pimple again. This should remove the pus.

Make sure to clean the extractor after each use (a quick wipe with rubbing alcohol should suffice). You don't want to spread the bacteria to a new place the next time you use it.

After you have extracted the zit, DO NOT pick at it. The point is to remove the pus and make the zit easier to cover up, not to create a scab. Scabs leave scars. Do not squeeze pimples with your fingers, this is what leads to damage in the lower layers of skin and leaves scars. It is also helpful at this point to apply your 2%  salicylic acid treatment gel to the treatment spot.

So there you have it. You can pop a pimple safely, just don't overdo it and don't pick at it afterwards. Good luck!

Skin Care Myths: Mineral Oil


Mineral Oil gets a bad rap. People claim that mineral oil is terrible for your skin, it coats it like plastic wrap, doesn't allow it to breathe, gives you cancer and worst of all it comes from petroleum. First of all, yes, it comes from petroleum but why is that so bad? Petroleum comes from the earth, that's pretty natural if you ask me. We get a hell of a lot of stuff from petroleum and most of it makes our lives better. Pure cosmetic grade mineral oil has no relationship to cancer. Mineral oil actually scores a 0 (out of 5) on the comedogenicity scale meaning it DOES NOT clog pores. It also scores a 0 (out of 5) on the irritancy scale. Compare this to a "natural" oil like coconut oil which scores a 4 for comedogenicity and a 1 for irritation. I'd much rather have a product made from mineral oil than from coconut oil. Mineral oil is an occlusive ingredient, meaning that it prevents trans epidermal water loss (TEWL in the biz). So basically, if you are preventing TEWL, you are moisturizing because you are keeping the moisture in your skin where it belongs. Mineral oil is cheap and it has an amazingly long shelf life compared to most other oils. It's a great solvent for removing makeup and it is a great emollient.

Probably the worst thing I can say about mineral oil in its pure form is that it feels greasy. However in a well formulated product, the greasiness will be mitigated by the other ingredients in the formula.

Skin Care Myths: If it's tingling, it's working

Last night, my husband spouted off one of the most common myths about skin care products. If a product is tingling or cooling, it means it's working. This truly couldn't be farther from the truth. Tingling/ cooling effects in washes, creams, balms etc come from menthol. Tingling is just your skin's response to irritation. Peppermint oil/ extract/ Menthol has antimicrobial properties but unfortunately is a known skin counter irritant. Counter-irritants are used to induce local inflammation for the purpose of relieving inflammation in deeper or adjacent tissues. In other words, they substitute one kind of inflammation for another, which is never good for skin. Irritation or inflammation, no matter what causes it or how it happens, impairs the skin’s immune and healing response. Although your skin may not show it or doesn't react in an irritated fashion, if you apply irritants to your skin the damage is still taking place and is ongoing, so it adds up over time. There is no good reason to put peppermint/ menthol in a skin care product. It's not helpful and it's damaging to your skin.