SPF 50 vs. one hundred – What Sunscreen Protects Pores and skin the Greatest?

Does SPF one hundred Sunscreen Shield Higher than SPF 50?

In all probability NOT! However a research simply revealed within the Journal of the American Academy of Dermatology concludes that it does. What do you consider and is the subject that straightforward?

For my part, maybe not. You need to perceive the high-quality factors of sunscreen as you make decisions about your solar safety technique – the way forward for your pores and skin well being and look depends upon it.

This new research is a basic instance of an business-paid-for research. I predict that you’re going to see it quoted all over as we go from winter sports activities into spring and summer time. Heck, it simply popped up in my e mail notifications for “subjects” in my scientific journals, which is how I discovered it. I’ve torn it aside and have to share what I’ve discovered with you as a result of it’s essential.

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Dermatologists have stated for years that SPF values greater than 30 present solely negligible safety and are actually advertising ploys to get you to buy a product. 

  • At SPF 30, your pores and skin is protected against ninety seven% of UVB rays.
  • Larger SPF merchandise present marginal elevated safety from ninety eight-ninety nine% of UVB rays.

Necessary factors about sunscreen and solar safety of your pores and skin:

The safety of your pores and skin by sunscreen is dependent upon how a lot product you apply.

  • You need to apply 2mg/cm2 which is a shot glass filled with product in case you are of common measurement and sporting a showering go well with (not the simplest directions to translate into actuality).
  • When counting on product alone for prolonged solar safety, you’re presupposed to reapply each 2 hours within the solar and after water publicity or rubbing product off your pores and skin with clothes or a towel.

Moreover, the kind of lively components determines if the product breaks down whereas neutralizing UV rays or not.

  • Chemical actives, comparable to these used on this research, do break down whereas working to guard you.
  • Titanium dioxide breaks right down to some extent.
  • Mineral zinc oxide just about doesn’t break right down to any vital extent.

My evaluation of this new, sunscreen research:

This was a nicely-structured research from a scientific technique’s perspective. Truthful-skinned grownup snow boarders and skiers in excessive-altitude Vail Colorado have been correctly randomized and all studied on someday.

They utilized Neutrogena’s Extremely Sheer Dry-Contact SPF one hundred or Banana Boat Sport Efficiency SPF 50 to both the proper or left aspect of their face. The merchandise have been unknown to them and the edges of the face every product was utilized to diversified among the many members.

This research has sensible, actual-life purposes as a result of the themes have been allowed to use their regular quantity of sunscreen, and to reapply as they usually would. They have been on the slopes all day (common of 6.1 hours) and reapplied a mean of as soon as throughout that point.

The research endpoint evaluated was the quantity of redness seen on their pores and skin by a board-licensed dermatologist the day after being on the slopes. The quantity of product used was additionally in contrast among the many members and was discovered to be constant among the many two sunscreens studied.

Curious parts of the research findings:

1. The themes didn’t apply the beneficial quantity or reapply as we direct.

We dermatologists know this occurs and is just a part of the truth we work with when educating individuals about solar defending their pores and skin.

Virtually nobody places sufficient sunscreen on or reapplies as directed. Sunscreen as solar safety is inconvenient. For years, we’ve got stated that perhaps having larger concentrations of sunscreen actives is sweet on this context as a result of when somebody applies too little sunscreen, perhaps they’re getting sufficient safety once they use larger SPF merchandise. It might be true.

2. fifty five.three% of topics counted who had used the Neutrogena product had much less redness. However does that imply that they had higher solar safety?

  • Dermatologists appeared on the topics’ pores and skin the day after they have been on the slopes and assessed it for redness. Why redness is taken into account to be solely as a consequence of sunburn and never windburn is unclear to me.
    Chapping from windburn can even current as redness and it isn’t potential, for my part, to separate windburn from sunburn in lots of instances. That is related as a result of the 2 merchandise studied have very totally different base lotions.

    The Johnson & Johnson Neutrogena product has dimethicone as one of many highest focus base elements. The Banana Boat product has the ingredient listed a lot farther down within the ingredient record. Dimethicone acts to assist shield pores and skin barrier from harsh wind and solvent exposures.

Sunscreen Conclusions You’ll See within the Media

Based mostly on this, the authors of the research have made conclusions you will notice within the media and promoting, they state:

Sunscreen-Myths_Thumb SPF 50 vs. one hundred – What Sunscreen Protects Pores and skin the Greatest?

“The outcomes of the present research reveal that the SPF one hundred+ sunscreen offered a degree of enhanced sunburn safety that was clearly observable following a single interval of publicity. Erythema severity was diminished on the SPF one hundred+ protected aspect.”

I’m not positive that’s the solely conclusion, and I take this research with an enormous grain of salt. I predict that you may be seeing it quoted as we go into spring and summer time and advertising dollars are put to promulgating the conclusion.

I feel that windburn and product base must be thought-about a cause for much less redness. I feel the exclusion of the 23 individuals who demonstrated no distinction in redness is curious. I’m additionally not a fan of chemical sunscreens and have completely totally different suggestions for complete solar safety based mostly on watching what works for my sufferers of their actual lives.

You’re studying this so I do know that you simply’re motivated to guard your pores and skin. This research, for my part, confuses the subject much more.

For my part:

I do know that the research was funded by Johnson & Johnson, makers of one of many merchandise. J&J owns Neutrogena, Aveeno, Clear and Clear, Roc, and different shopper manufacturers. J&J additionally owns Janssen Prescription drugs.

In my 35+ years in dermatology, I’ve discovered to be very skeptical with business-sponsored research. Actually, research like this rankle me. I’ve seen my sufferers swayed to the detriment of their well being by advertising claims that develop from a majority of these research.

Check out the 2 sunscreens studied. Each are made with chemical sunscreen elements.

Neutrogena Extremely Sheer Dry-Contact Broad Spectrum SPF one hundred
 Neutrogena is a Johnson & Johnson firm, the corporate who funded the research.

Ingredient listing for this product:

Lively Elements: Avobenzone 2%, Homosalate 15%, Octinoxate 7.5%, Octisalate 5%, Oxybenzone 6%. Inactive Elements: Water, Silica, Dimethicone, Adipic Acid / Diethylene Glycol / Glycerin Crosspolymer, VP-Hexadecene Copolymer, Hydroxyethyl Acrylate/Sodium Acryloyldimethyltaurate Copolymer, Glycerin, Oat (Aveena Sativa) Kernel Extract, Squalane, Ascorbyl Palmitate, Retinyl Palmitate, Tocopheryl Acetate, BHT, Cetyl Dimethicone, Bisabolol, Dipotassium, Glycyrrhizate, Glyceryl Stearate, PEG-one hundred Stearate, Polysorbate 60, Tetrasodium EDTA, Butylene Glycol, Trimethylsiloxysilicate, Xanthan Gum, Benzyl Alcohol, Isopropylparaben, Isobutylparaben, Butylparaben, Phenoxyethanol, Perfume.

Banana Boat

Owned by Edgewell Private Care which additionally owns Shick, Wilkinson Sword, Edge, Skintimate, Hawaiian Tropic, Playtex, Carefree, Stayfree, OB female merchandise, and Bll Canine males’s skincare amongst others.

Elements: Avobenzone (three.zero%), Homosalate (10.zero%), Octocrylene (6.zero%). Water,Cetearyl Alcohol,Stearyl Alcohol,Glycerin,Acrylates/C12-22 Alkyl Methacrylate Copolymer,Caprylyl Glycol,Cetyl Alcohol,Carbomer,Ceteth-10 Phosphate,Dicetyl Phosphate,Coco-Glucoside,Xanthan Gum,Disodium EDTA,Hydrogenated Methyl Abietate,Lauryl PEG-eight Dimethicone,Phenylisopropyl Dimethicone,Polyglyceryl-three Stearate/Isostearate/Dimer Dilinoleate Copolymer,Sodium Ascorbyl Phosphate,Tocopheryl Acetate,Aloe Barbadensis Leaf Juice, Phenoxyethanol, Methylparaben, Propylparaben.

I don’t advocate chemical sunscreens. I like to recommend mineral zinc oxide sunscreens.

In my remark, zinc oxide does a extra dependable job solar defending pores and skin. My sufferers who use mineral zinc oxide merchandise have much less Ask-DB-Sun-Protection_thumb-240x240 SPF 50 vs. one hundred – What Sunscreen Protects Pores and skin the Greatest?tanning, endure much less burns and present much less indicators of wrinkling, uneven pigmentation and precancerous and cancerous lesions.

I additionally encourage my sufferers to make use of complete solar safety when attainable that features:

Shading pores and skin with using a hat, solar-protecting clothes or being within the shade. On ski slopes, this is probably not straightforward. That makes the selection of sunscreen and the appliance methods all of the extra necessary.

Know that within the winter, UVB (sunburn ray) is lower than in summer time. In summer time, UVB depth is far larger at excessive altitudes. It was not so on this research in winter. UVA is out intensely all yr and the broad spectrum time period pertains to how properly a product blocks UVA.

My suggestions for skiers and snowboarders is to make use of a excessive-efficiency and excessive-focus zinc oxide product earlier than hitting the slopes.

Carry a product that’s straightforward to reapply, and do it each 2 hours and after rubbing or sweating product off. raw-elements-tinted-spf-30-broad-spectrum-sunscreen-ae9 SPF 50 vs. one hundred – What Sunscreen Protects Pores and skin the Greatest?One of the best excessive  efficiency product, for my part, is Uncooked Parts. 

 

 

I like to recommend:

  • Uncooked Parts Tin, both tinted or not.raw-elements-lip-spf-30-broad-spectrum-sunscreen-68b1-100x150 SPF 50 vs. one hundred – What Sunscreen Protects Pores and skin the Greatest?
  • Uncooked Parts Lip Safety
  • And to hold the Uncooked Parts Stickso which you can reapply product with out getting your palms messyRaw-Elements-126x150 SPF 50 vs. one hundred – What Sunscreen Protects Pores and skin the Greatest?

The bottom of Uncooked Parts is thick and doesn’t come off pores and skin simply. It’s going to additionally assist shield from windburn. It’s a critical sunscreen, made out of a pure formulation and natural components. And it has a hefty focus of non-nano particle zinc oxide sunscreen.

I might additionally pre-load my pores and skin with antioxidants underneath my sunscreen.

green-tea-antioxidant-skin-therapytm-b781-240x240 SPF 50 vs. one hundred – What Sunscreen Protects Pores and skin the Greatest?Antioxidants will assist to battle free-radical injury from a day of intense publicity. I might apply Inexperienced Tea Antioxidant Pores and skin Remedy beneath the Uncooked Parts. Vitamin C can also be a very good antioxidant however will sting if the pores and skin begins to turn into wind burned and chapped. 

Get extra info on my solar safety recommendation to stop solar injury of your pores and skin.

Don’t overlook to enroll to get the newest insights on having wholesome, younger-wanting pores and skin!

Reference:

Williams JD, Maitra P, Atillasoy E, Wu M-M, Farberg AS, Rigel DS, SPF one hundred+ sunscreen is extra protecting towards sunburn than SPF 50+ in precise-use: Outcomes of a randomized, double-blind, cut up-face, pure daylight publicity, medical trial, Journal of the American Academy of Dermatology (2018), doi: 10.1016/j.jaad.2017.12.062.

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