Ingredients
Niacinamide, cica, PDRN, retinol — what each does and how to combine them.
Most read
Views over the last 3 weeks, recent ones counting more.- 1Ingredient Compatibility · Routine Order—Ask AwayNEW
- 2Panthenol Lip Balm, Ceramide Lip Balm: What Each Ingredient DoesNEW
- 3"Pores gone in an instant" ads: do you believe them? A Japanese forum reactsNEW
- 4If one sunscreen isn't enough, does layering two help?NEW
- 5Vitamin C and niacinamide "cancel each other out"? The myth that won't dieNEW
Ask Anything — Skincare, Ingredients & Routine Questions
Please leave short questions here in the comments if they don’t quite warrant a separate post. Turn on "Get answers from Gloshell too" to get an immediate reply.
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GloshellTipsHow to Choose a Hydrating Serum, and How Is It Different from a Hydrating Ampoule?
Serums, ampoules, essences. They have different names, but they all come in similar bottles, and they all say “hydrating.” It’s only natural to be confused about what to buy. To get straight to the point, the full ingred
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How to Choose a Highly Moisturizing Lip Balm: Check Just Three Things in the Ingredients List
When you stand in front of the lip balm section, they all say “highly moisturizing” or “hydrating.” It’s hard to tell the difference from the claims on the packaging. In that case, turn the box over and check the ingredi
0 0 If one sunscreen isn't enough, does layering two help?
On Taiwan's PTT forum (BeautySalon board), someone ran a small experiment: innisfree's green tea sunscreen serum on one arm, Kosé's Suncut on the other, then a normal day of commuting, classes and a lunch run, with no re
0 1- GloshellTips
Panthenol Lip Balm, Ceramide Lip Balm: What Each Ingredient Does
Names like “Panthenol,” “Ceramide,” and “Hyaluronic Acid” often appear on lip balm product pages. If the names sound familiar but you’re unsure what each one does, this post will explain them all at once. Panthenol Panth
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How to Find an Unscented Lip Balm: Check One Line in the Ingredient List, Not the Box
Lip balm is applied right above the mouth, so its scent can seem stronger than you might expect. If the scent bothers you or your lips are sensitive, you may look for an unscented lip balm. “Unscented” and “fragrance-fre
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inci.decodedQuestionWhy is niacinamide suddenly in everything, even foundation?
A short question on r/Sephora drew dozens of replies: why is niacinamide now in nearly everything, from moisturisers to foundation and blush? What the replies said Many called it a trend: skincare ingredients in makeup s
0 0Alum blocks after shaving: useful habit or old-school placebo?
On the Badger & Blade wet-shaving forum, a shaver with sensitive skin said he had avoided alum blocks for years, worried the sting would be too much. He had relied on a styptic roll-on for nicks plus an aftershave balm,
0 0Tretinoin for ageing skin: worth the peeling, or not?
On Mumsnet's Style & Beauty board, someone who had just started prescription tretinoin at 0.05%, twice a week, asked whether it is really worth it. They were already peeling and stinging around the mouth, and the stream
0 1Ingredient Compatibility · Routine Order—Ask Away
This is a room for collecting quick questions like “Can I use these two together?” and “Is this the right order?” Turn on “Get a Gloshell answer too” in the comments and you’ll get an answer right away.
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피부노트QuestionAre PDRN cosmetics and Rejuran treatments the same thing?
As more cosmetics containing “PDRN” have become available, many people expect them to have the same effects as dermatological treatments. Although the names are similar, the delivery methods and purposes are different.
1 3VT Reedle Shot user reviews: the tingle is real, results split opinion
In March 2025, a "Has anyone used Reedle Shot?" thread went up on Girls Channel, a large Japanese women's forum. The poster had heard it contains countless tiny needles, stings, and comes in different needle counts. It d
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How to Choose a Squalane Lip Balm: How to Read the “ppm” Number
When looking for a squalane lip balm, you often come across phrases like "contains squalane," "high squalane content," and "200,000ppm." They may look similar, but they provide quite different amounts of information. Wha
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韓国コスメ手帖ChatJapanese or Korean retinol? 128 answers from a Japanese Q&A
In January 2026, a post on the @cosme Q&A board in Japan asked: "Japanese or Korean retinol, which do you use?" The poster wrote that in Korea, products can go to higher retinol concentrations if they pass an official re
0 1- inci.decodedQuestion
Retinol at 500 ppb on the front of the pack: marketing or meaningful?
On r/AsianBeauty, someone looked up the ingredient list of viral 'retinol collagen' toner pads and was let down. Water, glycols and glycerin led the list, hydrolysed collagen was declared at 50 ppm (0.005%) and retinol a
0 1 - inci.decodedQuestion
Horse fat in a sheet mask? Why it keeps showing up in J- and K-beauty
Someone in r/AsianBeauty bought a matcha sheet mask at a Japanese discount store, turned it over and found "horse fat" in the ingredient list. The question was simple: does that really mean what it says? What the replies
0 0 Retinol caused breakouts before: is it OK just around the eyes?
A question on theqoo's beauty board from someone with thin, sensitive skin: a few years ago a retinol serum did not wreck their face but brought out lots of acne-like bumps, so they gave up. Now their under-eye lines hav
0 0Weekly open thread: ask anything about Korean skincare
Short questions welcome — ingredient combos, product order, what a Korean label says, what to buy in Seoul. Turn on "Get a Gloshell answer" when you comment to get a reply in the thread.
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kbeauty.notesTipsSnail mucin: what it actually is and why K-beauty loves it
On the label it is snail secretion filtrate. It is valued as a humectant and skin-conditioning ingredient — it helps skin feel hydrated and smooth. Texture is part of the appeal: slippery, bouncy, comfortable. Usually fo
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PDRN everywhere: what is "salmon DNA" skincare actually doing?
Walk into any Olive Young right now and you will see PDRN on serums, pads, sun creams and masks. The term comes from clinics, where PDRN injections are used — but a cream is not an injection. On a label you usually see i
0 3 "Drinkable sunscreen": does it work? A Japanese forum is mostly skeptical
On Japan's Girls Channel forum, someone who works outdoors asked for recommendations and real results for "drinkable sunscreen" (飲む日焼け止め) supplements (August 2025). In Japan these are easy to find at drugstores and derma
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