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The Petal & Proof journal

Ingredient explainers, routine advice and honest buying notes, grounded in the same Amazon UK listings as the rest of the site. Written by our editorial team, not a named individual — see our editorial policy for how we source and rank listings.

Latest · IngredientsVitamin C serums, explained: what the antioxidant claim means, and why some turn orangeVitamin C is one of the more genuinely evidence-backed actives in skincare, and also one of the least stable — here is what it does, and what a colour change actually tells you.9 August 20264 min read

IngredientsSalicylic acid: what it actually clears, and how often to use itSalicylic acid works differently from most exfoliating acids because it dissolves in oil rather than water — here is what that means for blackheads, congestion, and how often it is reasonable to use it.9 August 20263 min read
IngredientsSPF number vs UVA star rating: what UK sunscreen labels actually tell youSPF and UVA stars measure two different things, and a high SPF with a low star rating leaves a real gap in protection — here is how to read both figures together.9 August 20263 min read
ToolsGua sha and facial rollers: what the de-puffing effect actually isBoth tools produce a real, visible change within minutes — and both fade within hours unless used consistently. Here is what is actually happening, and what regular use can realistically add.9 August 20263 min read
ToolsDo facial cleansing devices actually do anything hands cannot?A silicone or brush-head device can make cleansing more thorough and more consistent — but clean skin does not require one, and knowing which claim is honest changes whether it is worth buying.9 August 20263 min read
SkincareSensitive skin: what a 'for sensitive skin' label actually signalsThe label is a reasonable starting filter, not a guarantee — here is what it generally means, which ingredients cause most reactions, and how to shortlist without assuming the tag alone settles it.9 August 20265 min read
HaircareChoosing a shampoo and conditioner for your actual hair typeHair-type tags matter more than brand pairing, and this dataset has a real gap worth knowing about — curly hair has plenty of tagged shampoos but no tagged conditioner at all.9 August 20264 min read
SkincareDoes eye cream need to be a separate product from your moisturiser?Eye creams and moisturisers share more formulation ground than the separate-aisle marketing suggests — here is what genuinely differs, and when a dedicated eye cream is and is not worth adding.9 August 20264 min read
MakeupHow to choose a concealer that will not creaseCreasing comes from a specific, avoidable mismatch between coverage, setting and technique rather than bad luck — here is what actually causes it and how to buy and apply around it.9 August 20264 min read
HaircareHow to choose a curling iron: barrel size, heat and materialBarrel diameter decides the curl shape before anything else on the spec sheet matters, and heat control and material both change how forgiving the tool is while you learn.9 August 20264 min read
Budget PicksBest budget beauty under £20Price and performance do not move together the way marketing implies. These are genuinely well-reviewed picks across skincare, makeup and haircare that stay under £20 — and an honest note on where budget shopping stops working.5 August 20263 min read
HaircareHow to pick a hair dryer for curly hairCurly hair dries differently from straight hair, and the wrong setup can undo a good curl pattern in minutes. Here is what actually matters for curls specifically, beyond general hair-dryer advice.2 August 20263 min read
RoutinesThe Korean 10-step routine, simplifiedThe full K-beauty routine names ten steps. Most people only need four or five of them consistently — here is how to work out which ones actually earn a place in yours.28 July 20263 min read
RoutinesHow to layer skincare products in the right orderThin to thick is the rule everyone quotes, but the reasoning behind it explains far more than the rule itself — including why some products genuinely need a gap between them and most do not.21 July 20263 min read
IngredientsNiacinamide, explained: what it actually does and who it suitsOne of the most-mentioned ingredients in skincare is also one of the better-evidenced ones. Here is the mechanism behind the marketing, and a realistic sense of what it changes.14 July 20263 min read

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