The Glossary
36 ingredients. filtered by letter, function, or formulation.
showing 36 of 36 ingredients
Salicylic Acid (BHA): Benefits for Blemish-Prone Skin, Safety & How to Use
Salicylic acid is an oil-soluble BHA (beta-hydroxy acid) that penetrates into pores and sebaceous glands. Ideal for congestion-prone and blemish-prone skin types. Learn how it works, concentration and pH guidance, why...
Retinol for Skin: Benefits, How It Works & How to Use It — A Science-Led Guide
Retinol upregulates collagen and reverses photodamage. Complete science guide—mechanisms, bioavailability, timeline, retinization, safety, and how to use effectively.
Lactic Acid (AHA): Benefits, Safety & How to Use for Sensitive Skin
Lactic acid is a gentler, larger alpha-hydroxy acid with humectant properties that make it ideal for sensitive and drier skin types. Learn how it supports smoother-looking texture, why it's suitable for all skin types...
Mandelic Acid: The Gentlest AHA for Sensitive & Reactive Skin
Mandelic acid is the gentlest, largest alpha-hydroxy acid with humectant properties. Ideal for sensitive, reactive, and darker skin types. Learn why it's the safest AHA choice, how to introduce it gradually, and the f...
Licorice Extract: Brightening, Skin Calming & Even Tone Benefits
Licorice extract, derived from Glycyrrhiza glabra root, is a plant ingredient known for supporting a more even-looking complexion and skin comfort. It contains bioactive compounds that help skin appear brighter and ca...
Centella Asiatica (Cica): Skin Soothing, Barrier Support & How to Use
Centella asiatica, commonly called "cica," is a plant-derived ingredient known for skin-comfort and barrier-supporting properties. It contains bioactive compounds that help skin appear calmer and more resilient. Commo...
Glycolic Acid (AHA): Benefits, pH, Concentration & How to Use It Safely
Glycolic acid is a widely used and extensively studied chemical exfoliant. Learn how concentration and pH determine potency, why it works for texture and tone, and how to use it safely in high-UV environments.
Bakuchiol Skincare: Retinol Alternative & Anti-Aging Guide
Bakuchiol is a plant-derived skincare ingredient from the babchi plant that delivers retinol-like anti-aging results without irritation, redness, or peeling. In this comprehensive guide, we explain how bakuchiol work...
Silicones & Dimethicone for Skin: Safety, Acne, Pore Clogging & EU Regulations Explained
Despite widespread claims, silicones like dimethicone are among the most well-tolerated ingredients in skincare. Learn the evidence behind silicone safety, myths debunked, and EU regulations explained.
Ferulic Acid Benefits for Skin: CE Ferulic Science, Vitamin C & How to Use It
Ferulic acid is the plant-derived antioxidant that stabilises vitamins C and E and supports the skin's daytime defence against free-radical stress. Here's how it works, the CE Ferulic science, and how to use it.
Vitamin E for Skin: Benefits, Tocopherol vs Tocopheryl Acetate, and How to Use It
Vitamin E is the skin's principal fat-soluble antioxidant — the guardian of the lipid layers vitamin C can't reach. This guide covers what tocopherol does in skin, why the form on the label (tocopherol vs tocopheryl a...
Polyglutamic Acid for Skin: What It Is, How It Works & How It Compares with Hyaluronic Acid | Boldpurity
Polyglutamic acid (PGA) is a fermentation-derived biopolymer humectant with higher laboratory-measured water retention capacity than hyaluronic acid and an association with supporting HA synthesis pathways in vitro. T...
Vitamin C for Skin: Complete Science Guide — Derivatives, Mechanisms & How to Choose | Boldpurity
Vitamin C has four distinct documented mechanisms — antioxidant, collagen biosynthesis cofactor, tyrosinase inhibition, and dopaquinone reduction. This complete science guide covers all six major derivatives, the feru...
Kojic Acid for Skin: How It Works, Evidence & What to Know | Boldpurity
Kojic acid is a fermentation-derived organic acid that inhibits tyrosinase through copper chelation — a mechanism distinct from Alpha-Arbutin's competitive inhibition. This science guide covers how it works, why the s...
Azelaic Acid for Skin: Benefits, Mechanism & How It Targets Pigmentation | Boldpurity
Azelaic Acid is a dicarboxylic acid with a dual documented mechanism: tyrosinase inhibition and anti-inflammatory action. This science guide covers how it works, what the published evidence shows at cosmetic vs pharma...
Alpha-Arbutin for Skin: What It Is, How It Works & Dark Spot Science | Boldpurity
Alpha-Arbutin is a glucoside derivative of hydroquinone that targets tyrosinase — the rate-limiting enzyme in melanin synthesis — through reversible competitive inhibition. This science guide covers the full melanogen...
Peptides in Skincare: What They Are, How They Work & Which Ones Are Worth Using
Peptides are short amino acid chains that interact with skin cells via receptor binding and signalling pathways. This science-based guide covers all four peptide types — signal, carrier, neurotransmitter-inhibiting, a...
Ceramides for Skin: What They Are, How They Work & Why Your Barrier Needs Them | Boldpurity
Ceramides make up approximately 50% of the skin's intercellular lipid matrix — the structural "mortar" between skin cells that regulates moisture loss and barrier resilience. This science-based guide covers all 12 cer...
EGF in Skincare: What It Does, Science & Benefits | SkinReset™ PDRN
sh-Oligopeptide-1, the INCI name for a bioengineered Epidermal Growth Factor analogue, is a signalling peptide documented in dermatological research for its role in supporting the skin's natural renewal processes. Thi...
Tasmanian Pepper Extract (Tasmannia Lanceolata) for Skin: Antioxidant, Soothing & Bioactive Science | Boldpurity
Most botanical antioxidants do one thing: neutralise free radicals. Tasmanian Pepper Extract (Tasmannia lanceolata) does that — and then something most plant actives cannot. Its primary compound, polygodial, interacts...
Nonapeptide-1 in Skincare: Science, Benefits & How It Works for Skin Tone | Boldpurity
Nanopeptide-1 is a small synthetic peptide associated with modulation of the melanogenesis signalling pathway — the biological process that governs how melanocytes regulate melanin production. This guide explains the ...
What Is Glycereth-26 in Skincare? Benefits, Uses, Safety Explained
Glycereth-26 is widely used in toners and serums for lightweight hydration. This guide explains its mechanism, formulation role, and why it’s used alongside hyaluronic acid.
Betaine (Anhydrous) for Skin: The Osmoprotectant Humectant Your Skin Actively Seeks
Betaine anhydrous is a sugar beet-derived osmoprotectant and humectant — drawing water into the skin, protecting cells from dehydration stress, and reducing irritation. The complete science guide by Boldpurity.
Panax Ginseng in Skincare: Benefits, Ginsenosides & The Science of Skin Radiance
Panax Ginseng works differently from typical brightening ingredients. Instead of only targeting pigmentation, it supports radiance at the circulatory level, helping skin look more energised, even, and resilient.
Adenosine in Skincare: Benefits, Mechanism, and Clinical Evidence
🔬 Science ReviewedBoldpurity Science Team 📋 6 Peer-Reviewed ReferencesCited throughout ✅ Regulatory CompliantEU · US · India · GCC At a Glance INCI name: Adenosine Source: Yeast fermentation — n...
Sodium Hyaluronate: Benefits, Uses, Molecular Weight & Skin Science Guide
Sodium hyaluronate is the gold-standard humectant in modern skincare. This guide explains how it hydrates skin, reduces TEWL, and why molecular weight determines its real effectiveness — and how to get the most from i...
Hydrolysed Elastin in Skincare: Benefits, How It Works & Science Explained
Hydrolysed elastin is elastin protein broken down into smaller peptides through enzymatic hydrolysis. Topically it acts as a humectant and surface conditioner — and in vitro studies show it supports fibroblast activit...
Niacinamide for Skin: Benefits, Acne, Dark Spots & How to Use
Niacinamide for skin: science-backed benefits for dark spots, acne, pigmentation & barrier repair. Best percentage, how to use, and why Indian skin needs it.
Dragon Blood Extract in Skincare: What It Is & How It Works
Dragon blood extract is a plant-derived antioxidant resin from Croton lechleri that helps soothe irritation, protect against pollution damage, and support skin repair.
Squalane for Skin: What It Is, How It Works & Why Your Skin Already Makes It | Boldpurity
Squalane is the stable, hydrogenated form of squalene — a lipid your skin already produces as part of its natural sebum. Topically it works as an emollient, integrating into the stratum corneum lipid matrix to reduce ...
Glycerine for Skin: Benefits, Uses, Side Effects & How It Works
Glycerin (glycerine) is a plant-derived humectant and skin-endogenous molecule — naturally present in human skin and transported into the epidermis via Aquaporin-3 channels. It draws water into the stratum corneum, en...
Panthenol for Skin | Benefits, Uses & Barrier Repair Science | Boldpurity
Panthenol, also known as provitamin B5, is one of the most well-evidenced hydration and barrier-repair ingredients in skincare. It converts to Vitamin B5 in the skin, where it attracts and retains moisture, supports l...
Tranexamic Acid Serum for Dark Spots: How It Works & Who Should Use It
Tranexamic acid is a skin-brightening ingredient that helps reduce dark spots and hyperpigmentation by blocking the signals that trigger excess melanin production. It is widely used for melasma, post-acne marks, and u...
What Are Spicules? The Ingredient Behind Liquid Microneedling Serums
If you've seen "spicules" on skincare labels and wondered what they actually are — this is the complete guide. We cover where spicules come from, how they create microchannels in skin, why conventional spicule serums ...
What Is PDRN? Benefits, Science & How to Choose | Boldpurity
A complete guide to PDRN in skincare — what it is, how it works, why most PDRN serums face a fundamental delivery limitation, and what to look for when choosing an encapsulated PDRN serum.
Undecylenoyl Phenylalanine (Sepiwhite): The Brightening Ingredient That Stops Dark Spots Before They Start
Undecylenoyl phenylalanine is a clinically studied brightening ingredient that helps regulate excess melanin production. This article explains how it works in the skin, the science behind its pigment-modulating effect...
