marcelavy
@m.sunscreen.cc
Just another skincare enthusiast with no ties to the industry. Formerly u/marcelavy on Reddit. r/AsianBeauty flair: NC15|Aging/Pores|Dehydrated|JP + sun allergy, acne, other skin afflictions. @sunscreen.cc ただの一般人のスキンケア等関連アカウント。乾燥肌・日光アレルギー・ニキビ（吹出物）・その他皮膚疾患
Reposted by marcelavy
A lot of chemical #sunscreen fear is from animal/in vitro studies taken out of context, without comparing exposure in those studies to the actual amounts we're exposed to from sunscreens.
Safety limits have massive buffers (100-fold margin of safety, from eg. no observed adverse effect level).
Safety limits have massive buffers (100-fold margin of safety, from eg. no observed adverse effect level).
January 17, 2026 at 12:33 PM
A lot of chemical #sunscreen fear is from animal/in vitro studies taken out of context, without comparing exposure in those studies to the actual amounts we're exposed to from sunscreens.
Safety limits have massive buffers (100-fold margin of safety, from eg. no observed adverse effect level).
Safety limits have massive buffers (100-fold margin of safety, from eg. no observed adverse effect level).
Rohto Pharmaceutical to charge roughly 10% more for 38 products (37 of which are from Hada Labo) starting in April. Press release with list of products: www-sc10-cd.rohto.com/news/release...
January 15, 2026 at 1:38 PM
Rohto Pharmaceutical to charge roughly 10% more for 38 products (37 of which are from Hada Labo) starting in April. Press release with list of products: www-sc10-cd.rohto.com/news/release...
シャンプー替えてから髪の調子がいい気がするけど、シャンプー替えるとほぼ必ず一旦調子がよくなる（気がする？）ので新しく使っているものが良いのかどうかすぐには判断がつかない。なんなんだろう、この現象。
※「シャンプー」はトリートメントも含む
※「シャンプー」はトリートメントも含む
January 14, 2026 at 12:46 PM
シャンプー替えてから髪の調子がいい気がするけど、シャンプー替えるとほぼ必ず一旦調子がよくなる（気がする？）ので新しく使っているものが良いのかどうかすぐには判断がつかない。なんなんだろう、この現象。
※「シャンプー」はトリートメントも含む
※「シャンプー」はトリートメントも含む
I just noticed that official Thai and Japanese online listings for the Cathy Doll lip serums (available in Japan starting this month) give different SPF/UVAPF test results. Does this mean they have different formulations? Or are these results from different tests?
January 7, 2026 at 5:04 PM
Press release by the official distributor in Japan: www.cosmelabo.shop/new/2025-12-...
Same press release on third-party website: prtimes.jp/main/html/rd...
Same press release on third-party website: prtimes.jp/main/html/rd...
【キャシードール】紫外線・乾燥から唇を守る「CathyDoll インテンシブUV リップセラム」が発売決定
タイコスメブランド『Cathy Doll（キャシードール）』から、紫外線ダメージを防ぎながら唇を美しく見せる「
www.cosmelabo.shop
January 7, 2026 at 5:01 PM
Press release by the official distributor in Japan: www.cosmelabo.shop/new/2025-12-...
Same press release on third-party website: prtimes.jp/main/html/rd...
Same press release on third-party website: prtimes.jp/main/html/rd...
Source for the Japanese version: item.rakuten.co.jp/citrus-shop/... (Not listed by the official distributor, but the listing is linked from the press release)
item.rakuten.co.jp
January 7, 2026 at 5:01 PM
Source for the Japanese version: item.rakuten.co.jp/citrus-shop/... (Not listed by the official distributor, but the listing is linked from the press release)
Source for the Thai version: online.karmarts.com/new-product/... (Cathy Doll is a Karmarts brand, so this is the official website.)
Cathy Doll อินเทนซีฟยูวีลิปเซรั่ม เอสพีเอฟ50+ พีเอ++++ 10ml เคที่ดอลล์
รายละเอียดสินค้า
ลิปเซรั่มกันแดดสูตรวีแกน มอบการดูแลริมฝีปากนุ่มชุ่มชื้น พร้อมประสิทธิภาพการป้องกันแสงแดดด้วย SPF50+ PA++++ ปกป้องริมฝีปากจากรังสี UVA/UVB ลดการถูกทำร้ายจากแสงแดดพร้อมช่วยฟื้นฟู ด้วยสา...
online.karmarts.com
January 7, 2026 at 5:01 PM
Source for the Thai version: online.karmarts.com/new-product/... (Cathy Doll is a Karmarts brand, so this is the official website.)
Or potentially some kind of mistake on the Japanese version’s part, since some of the text in Japanese appears to be meant for the information on patch testing?
January 7, 2026 at 5:01 PM
Or potentially some kind of mistake on the Japanese version’s part, since some of the text in Japanese appears to be meant for the information on patch testing?
I just noticed that official Thai and Japanese online listings for the Cathy Doll lip serums (available in Japan starting this month) give different SPF/UVAPF test results. Does this mean they have different formulations? Or are these results from different tests?
January 7, 2026 at 5:01 PM
I just noticed that official Thai and Japanese online listings for the Cathy Doll lip serums (available in Japan starting this month) give different SPF/UVAPF test results. Does this mean they have different formulations? Or are these results from different tests?
Wow, over 50%, that does sound like a lot! Glad it seems like you’ve found an ingredient that’s likely compatible with your skin. I think it can worsen acne for some people, but everyone is different!
December 28, 2025 at 8:08 AM
Wow, over 50%, that does sound like a lot! Glad it seems like you’ve found an ingredient that’s likely compatible with your skin. I think it can worsen acne for some people, but everyone is different!
Plus apparently the third ingredient, dipropylene glycol, is also moisturizing. But I would hazard a guess that it’s the glycerin. I’ve heard it can be too much for some people in high quantities
December 28, 2025 at 7:56 AM
Plus apparently the third ingredient, dipropylene glycol, is also moisturizing. But I would hazard a guess that it’s the glycerin. I’ve heard it can be too much for some people in high quantities
Hmm. This would be better answered by a cosmetic chemist or someone otherwise more familiar with the science, but based on the ingredient list, maybe it’s the glycerin? It’s the second ingredient listed and likely has a lot of it. Plus the dimethicone (4th listed), like you said
December 28, 2025 at 7:45 AM
Hmm. This would be better answered by a cosmetic chemist or someone otherwise more familiar with the science, but based on the ingredient list, maybe it’s the glycerin? It’s the second ingredient listed and likely has a lot of it. Plus the dimethicone (4th listed), like you said
泡美容液もめっちゃ直後だとクリームうまく塗れない。キュレルの美容液よりもエリクシールの美容液の方がキュレルのクリームと相性がいいという。
December 27, 2025 at 3:58 PM
泡美容液もめっちゃ直後だとクリームうまく塗れない。キュレルの美容液よりもエリクシールの美容液の方がキュレルのクリームと相性がいいという。
長年愛用してるキュレルは最近方向性がよく分からない。でも泡美容液は悪くない。従来のジェル状の美容液の唯一の欠点であるモロモロ問題が解決されている。ただジェル状の方がほてっているときに気持ちいいので理想的には両方を使い分けたいけど、あんまり長く開封済みのを置いといても（少なくともジェル状の方は）分離してきたりして良くはないから最終的にはどちらかを選ぶことになる。
December 27, 2025 at 8:30 AM
長年愛用してるキュレルは最近方向性がよく分からない。でも泡美容液は悪くない。従来のジェル状の美容液の唯一の欠点であるモロモロ問題が解決されている。ただジェル状の方がほてっているときに気持ちいいので理想的には両方を使い分けたいけど、あんまり長く開封済みのを置いといても（少なくともジェル状の方は）分離してきたりして良くはないから最終的にはどちらかを選ぶことになる。
イハダ、いかにも合いそうでいつも買いたくなるんだけど、買ったことのあるものはどれも普通かむしろ全然合わなかったのでやめておいた方がいいと自分に言い聞かせることになる。ブランディングの勝利
（今日まさに「やらかして」いるのでオイル気になるけど我慢！！！）
（今日まさに「やらかして」いるのでオイル気になるけど我慢！！！）
December 27, 2025 at 8:25 AM
イハダ、いかにも合いそうでいつも買いたくなるんだけど、買ったことのあるものはどれも普通かむしろ全然合わなかったのでやめておいた方がいいと自分に言い聞かせることになる。ブランディングの勝利
（今日まさに「やらかして」いるのでオイル気になるけど我慢！！！）
（今日まさに「やらかして」いるのでオイル気になるけど我慢！！！）
Reposted by marcelavy
some leftists take skincare too far
The US is becoming an authoritarian state and your concerned about the skincare routine of two podcasts hosts? This is not a commentary about you, but I do think some leftists take skincare too far. To be clear, I'm all for a reasonable level of moisturization, but not to the point of glistening.
November 16, 2025 at 11:27 PM
some leftists take skincare too far
I don’t even know what makeup I want to wear any more. I don’t want to “look young,” but I don’t want to look frumpy or gaudy, either. Similar issues apply for clothing. I thought I wouldn’t really care too much about aging, but it’s hard in a way I never anticipated.
October 11, 2025 at 8:36 AM
I don’t even know what makeup I want to wear any more. I don’t want to “look young,” but I don’t want to look frumpy or gaudy, either. Similar issues apply for clothing. I thought I wouldn’t really care too much about aging, but it’s hard in a way I never anticipated.
I occasionally replace my mascara after probably only having used it a few times, partly because eye infections are no joke, and partly because they dry up and get hard to apply. I prefer cushion foundations but have switched to powder so that I can get away with having the same one for longer.
October 11, 2025 at 8:36 AM
I occasionally replace my mascara after probably only having used it a few times, partly because eye infections are no joke, and partly because they dry up and get hard to apply. I prefer cushion foundations but have switched to powder so that I can get away with having the same one for longer.
The thing is that I don’t really feel all that much older, probably because life has been at a standstill for me since 2019. It also feels wasteful to even consider buying new makeup when I have so much left and will rarely wear the new makeup, anyway.
October 11, 2025 at 8:36 AM
The thing is that I don’t really feel all that much older, probably because life has been at a standstill for me since 2019. It also feels wasteful to even consider buying new makeup when I have so much left and will rarely wear the new makeup, anyway.
I’ve been struggling with makeup for quite a while now. On one hand, there’s the practical issue of the Covid era of how I almost never wear makeup any more. On the other, I’ve also aged enough for my old makeup to not look right any more, even by probably-outdated standards.
October 11, 2025 at 8:36 AM
I’ve been struggling with makeup for quite a while now. On one hand, there’s the practical issue of the Covid era of how I almost never wear makeup any more. On the other, I’ve also aged enough for my old makeup to not look right any more, even by probably-outdated standards.
Oh, of course they also have one that’s shaped like a nose. I guess it would’ve been too… on the nose to have this in the coloring of the one above
www.instagram.com/reel/DMak9eR...
www.instagram.com/reel/DMak9eR...
September 24, 2025 at 7:30 AM
Oh, of course they also have one that’s shaped like a nose. I guess it would’ve been too… on the nose to have this in the coloring of the one above
www.instagram.com/reel/DMak9eR...
www.instagram.com/reel/DMak9eR...
A friend shared this, and all I could think of were blackheads
www.instagram.com/reel/DO-cBL9...
(Reposted from @jellypoppads on Instagram)
www.instagram.com/reel/DO-cBL9...
(Reposted from @jellypoppads on Instagram)
September 24, 2025 at 7:30 AM
A friend shared this, and all I could think of were blackheads
www.instagram.com/reel/DO-cBL9...
(Reposted from @jellypoppads on Instagram)
www.instagram.com/reel/DO-cBL9...
(Reposted from @jellypoppads on Instagram)
Reposted by marcelavy
It's ironic that this article perpetuates fear about chemical sunscreens being unsafe. Plus the misconception that dermatologists are experts on product safety (that's toxicologists and safety assessors).
Also the US blanket recommendation on sunscreen use that's not actually based on evidence...
Also the US blanket recommendation on sunscreen use that's not actually based on evidence...
August 19, 2025 at 12:39 PM
It's ironic that this article perpetuates fear about chemical sunscreens being unsafe. Plus the misconception that dermatologists are experts on product safety (that's toxicologists and safety assessors).
Also the US blanket recommendation on sunscreen use that's not actually based on evidence...
Also the US blanket recommendation on sunscreen use that's not actually based on evidence...
Reposted by marcelavy
Evidence suggests early humans used primitive sunscreen and wore tailored clothing—possibly contributing to their survival as Neanderthals went extinct.
Did UV Rays Doom Neanderthals?
Some researchers say sunscreen and tailored clothing might have helped humans survive when Neanderthals went extinct.
on.wsj.com
August 6, 2025 at 5:43 PM
Evidence suggests early humans used primitive sunscreen and wore tailored clothing—possibly contributing to their survival as Neanderthals went extinct.