deepweb1298
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Done a previous thread on LRP's new SPF with it's reformulation including Mexoryl 400 which protects against 380-400nm UV wavelength:
looksmax.org
I found a dermatology paper done by some of the scientists who do have a conflict of interest as having worked directly with LRP and L'Oreal but i found a lot of great points:
I've taken some notes from the paper.
UVA1 = 340-400nm
UVA2 = 320–340 nm
LRP also define the 380-400nm wavelengths as Ultra-Long UVA.
See how Mexoryl 400 is literally the only 1 that protects against the 380-400nm UV wavelengths.
Most if not all SPF's nowadays include the Titanium / Zinc Oxide ingredients which is what i thought gave you pretty much all the protection i need. But obviously these ingredients have poor coverage of 380-400nm range which Mexoryl 400 covers.
Takeaways for me would be:
La Roche-Posay Release New Sunscreen Reformulation To Protect Against UV Rays
https://inside-our-products.loreal.com/ingredients/mexorylr-xl https://inside-our-products.loreal.com/ingredients/mexorylr-sx https://www.laroche-posay.co.uk/en_GB/anthelios-uvmune-400-hydrating-cream-spf50-sun-cream-50ml/LRPUK-166.html L'Oreal have a new reformulation to protect mainly against...
looksmax.org
I found a dermatology paper done by some of the scientists who do have a conflict of interest as having worked directly with LRP and L'Oreal but i found a lot of great points:
I've taken some notes from the paper.
UVA1 = 340-400nm
UVA2 = 320–340 nm
LRP also define the 380-400nm wavelengths as Ultra-Long UVA.
- While UVB and UVA2 penetrate superficial skin layers, down to the basal layer of the epidermis, long-wave UVA1 can penetrate deeper, into the dermis, and VL and infrared radiation deeper still, reaching the hypodermis.
- UVB induces a direct effect on melanocytes and leads to the activation of the p53 protein in keratinocytes. This protein binds to the pro-opiomelanocortin promoter, responsible for production of α-melanocyte-stimulating hormone, which in turn induces pigmentation.
- Dark skin is more prone to skin pigmentation, melasma, and post-inflammatory hyperpigmentation, while light skin is more prone to sunburn, DNA damage, skin cancer, photoaging, and solar lentigo.
- While UVA1 is less energetic than UVB, importantly, pointed out Passeron, it represents a huge proportion of the UV light people receive, is constant throughout the day, regardless of the season, and can penetrate through windows, so people can be chronically exposed to it.
- Gene expression studies show that in fibroblasts and keratinocytes, a number of genes are modulated by UVA1 exposure, including the upregulation of genes linked to inflammation and the downregulation of genes linked to antiviral and antimicrobial defense.
- VL in the high energy blue/violet spectrum (around 415 nm) has a role in hyperpigmentation in darker skin (phototypes IV–VI).
- It is recommended that sunscreen use should be regular even on cloudy days, applied every 2–3 hours or after water immersion, and used at a volume of around 2 mg/cm.
- VL is important in skin pigmentation development in phototypes IV−VI
- There are a number of UV filters available in sunscreens, but while most screen out UVB, with some also blocking UVA2, currently only one screens the 380−400 nm spectrum of UVA1 (Figure 1): the filter MCE, often known as Mexoryl 400.
- One in vitro study showed that the number of fibroblasts remaining following UVA1 exposure was significantly higher with an MCE-containing formulation compared with a classic sunscreen formulation that had no UVA1 protection
See how Mexoryl 400 is literally the only 1 that protects against the 380-400nm UV wavelengths.
Most if not all SPF's nowadays include the Titanium / Zinc Oxide ingredients which is what i thought gave you pretty much all the protection i need. But obviously these ingredients have poor coverage of 380-400nm range which Mexoryl 400 covers.
- It is advised to seek shade, wear photoprotective clothing, and apply a broad-spectrum sunscreen with SPF30+.
- In particular for those with solar urticaria and cutaneous porphyrias, a tinted or coloured sunscreen is recommended to help to protect against the sun’s effect.
- Protection against VL can occur through shielding with products containing titanium dioxide or red, black, or yellow iron oxides.While people with phototypes I–III usually do not need VL protection, Passeron discussed how this is needed by those who have a variety of dermato logical conditions, including melasma, acne marks, actinic lentigo, post-inflammatory hyperpigmentation, or blue light sensitivity.
- For people with acne, it is known that blue and red waves of light can help to inhibit Cutibacterium acnes-associated inflammation.14 However, UVA and UVB can induce dysbiosis and UVA exposure can lead to epidermal thickening. Accordingly, a UVA/UVB sunscreen that is noncomedogenic and does not interfere with topical acne medication is recommended for those with acne.26 As rosacea can be triggered by UV light and heat via a number of different cell pathways, daily use of a broad-spectrum, SPF30+ sunscreen can help to protect against these triggers.
Takeaways for me would be:
- Going to buy the tinted version of the AntHelios UVmune 400.
- 365 days a year SPF.
- Wearing sun protective clothing more like wide brimed hats.
- Be more diligent on my red light therapy.
- LRP has a patented ingredient which is the only one on the market that protects against the 380-400nm UV wavelength.
- UVA specifically legit destroys your skin. All the users posting threads about how good getting sun is are legit retards. JFL at anyone going to tanning beds, using tanning oils.
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