Guides, page 2
The full archive of our chemists' formulation notes and ingredient science, newest first.
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Cosmetic active ingredients essential for positive effect
The actives that do the work in a cosmetic (AHAs, BHAs, ceramides, vitamins C and E, retinoids): what each one is, what it does, and who it suits.
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Cosmetic active ingredients: a must for the cosmetic benefit
Why actives determine whether a cosmetic works, how far into skin they legally may act, and why the excipients around them matter as much as they do.
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Cosmetics and pharmaceuticals: active ingredients with dual benefits
Actives that appear in both cosmetic and pharmaceutical products (vitamins C and E, AHAs, retinoids, salicylic acid) and what separates the two categories.
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Countering skin blemishes, including acne, with the right cosmetics
The main blemish types and what treats them (salicylic acid, benzoyl peroxide, azelaic acid and retinoids), plus why hydroquinone is not a cosmetic option.
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Cosmetics as daily self-care, more than beauty products
How cosmetics function as daily maintenance rather than decoration: barrier care, photoprotection, self-expression, and where the psychological evidence stands.
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Exfoliation skincare: radiant and healthy skin with active ingredients
Physical, chemical and enzymatic exfoliation compared: AHAs, BHA, PHAs and proteases, what each suits, and why over-exfoliation is the commonest mistake.
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FD&C colors: an introduction
What the FD&C designation means, how it differs from D&C and External D&C, what "lake" indicates, and where the certified colour list lives in US law.
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FD&C colors: why approved colours are better
The commercial and regulatory case for certified colour additives: who regulates them where, what batch certification buys you, and what unapproved colour costs.
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Hair dyes and lightening agents: technical differences for a layperson
Temporary, semi-permanent, demi-permanent and permanent colour compared: how deep each penetrates, how long it lasts, and what bleaching does to hair.
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Harmful effects of excessive sun exposure
Short and long-term skin damage, heat illness, dehydration and solar urticaria: what excessive sun exposure does, and the warning signs worth knowing.
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How can a cosmetic active ingredient supplier help a formulator?
Beyond supplying material: starting formulations, compatibility and stability guidance, regulatory dossiers, sampling at workable scale, and troubleshooting.
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The importance of having the right ingredient in a cosmetic
Why ingredient selection decides whether a cosmetic works, how transparency changed the market, and what "safe ingredient" means in regulatory terms.
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The importance of inclusive shade ranges in cosmetics
Why a broad shade range is a formulation problem before it is a marketing one: undertones, iron oxide ratios, titanium dioxide flashback and pigment load.
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Importance of vitamin D via sun exposure
How skin makes vitamin D from UV-B, the liver and kidney steps that activate it, and an honest account of which health claims the trial evidence supports.
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Industrial dyes and pigments: usage in several industries
What separates a dye from a pigment, and how that difference decides which one gets used in textiles, construction, coatings and packaging.
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Industrial dyes and pigments used in consumer appliances
How appliance makers colour plastics (masterbatch, compound, liquid and dry colour) and why UV stabilisers and surface finish do jobs colour cannot.
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Industrial dyes in textile industry
The main textile dye classes (direct, acid, basic, reactive, disperse, vat and mordant), which fibres each one bonds to, and why the pairing is not interchangeable.
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The influence of cosmetics on modern life, and the safety of colouring agents
How colourants are classified, what regulatory approval establishes, and why "natural" is a claim about origin rather than about safety.
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Lack of sun exposure and health issues
What too little daylight does to sleep timing, mood, bone health and children's eyesight, and which of the commonly cited effects the evidence supports.
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Quality testing of cosmetic active ingredients: what is tested, and how
The tests a cosmetic active goes through (identity, assay, impurities, heavy metals, microbiological limits and stability) and what to ask a supplier for.
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Regional and ethnic beauty frameworks and their preferences
K-beauty, J-beauty, C-beauty and the rest: what each regional framework prioritises, and the formulation and regulatory consequences for a supplier.
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Role of active ingredients in cosmetic products
What active ingredients do in a formulation (hydration, anti-ageing, photoprotection, brightening and acne control) and the mechanism behind each class.
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Role of cosmetic active ingredients suppliers
The six functions an ingredient supplier performs: sourcing, quality assurance, inventory and storage, technical support, documentation and innovation.
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The role of preservatives in cosmetic products
Why any water-containing cosmetic needs preservation, the main systems in use, how challenge testing proves they work, and which "natural" alternatives do not.