Retinol is one of the most scientifically proven ingredients in skincare, delivering powerful benefits for ageing, texture, acne, and overall skin health—but its effectiveness depends heavily on how it’s used. Because retinol works through a precise conversion process within the skin, combining it with incompatible ingredients or incorrect layering can reduce results and trigger irritation. Understanding the science behind retinol interactions allows you to avoid common pitfalls, pair it with supportive ingredients, and build routines that maximise benefits while protecting the skin barrier. With the right knowledge, retinol becomes not an intimidating active, but a transformative tool for long-term skin health.

Applying SPF every day is one of the best things you can do for your skin — but removing it properly is just as important. Because sunscreen is designed to resist water, sweat, and friction, a single cleanse often isn’t enough to fully remove it from the skin. Left behind, SPF residue can contribute to congestion, dullness, and reduced effectiveness of your evening skincare products. In this guide, we explain why sunscreen is so difficult to remove, the science behind double cleansing, and how to choose the right cleanser pairing for your skin type. Discover the simple routine that helps keep skin clear, balanced, and healthy.

Pigmentation around the mouth is one of the most common - and most misunderstood - skincare concerns. Whether it appears as darkening on the upper lip, corners of the mouth, chin, or philtrum, perioral hyperpigmentation is not a single condition but a collection of different pigmentation types that share the same area of the face. Hormonal changes, post-blemish marks, sun exposure, friction from hair removal, and skin irritation can all trigger pigmentation in this zone, which is why a one-size-fits-all approach rarely delivers lasting results. In this guide, we break down the five key causes of pigmentation around the mouth, how to identify which type you have, the most effective ingredients to target it, and the skincare routine that can help fade discolouration and prevent it from returning

SPF 30 or SPF 50? The difference is smaller than most people think - but how you apply sunscreen matters far more than the number on the bottle. In this evidence-based guide, we break down what SPF ratings actually mean, why most people aren’t getting the protection they think they are, when SPF 50 is genuinely worth it, and how UV exposure changes across different US climates. From tanning myths to application mistakes, this is your practical, no-nonsense guide to choosing the right SPF for your skin, lifestyle, and daily routine.

Mineral vs chemical sunscreen: one of skincare’s biggest debates - and one of its most misunderstood. Both protect effectively against UV damage, but they differ in texture, finish, and wearability. This guide breaks down the real science behind both filter types, the truth about “chemical sunscreen” myths, and how to choose the SPF you’ll actually wear every day.

Reapplying sunscreen is the part of SPF that actually keeps your skin protected - but for most people, makeup gets in the way. This guide explains why sunscreen needs topping up throughout the day, how often to reapply, and the easiest ways to layer SPF over makeup without ruining your base. From beauty blender techniques to common SPF mistakes, here’s everything you need to know for real-world sun protection.

Daily SPF is not just a summer habit - it is one of the most important long-term investments you can make in your skin health. In this guide, we break down the science behind year-round UV exposure, explain the difference between UVA and UVB rays, and explore why winter, cloudy days, indoor light through windows, and even daily commutes still expose your skin to cumulative damage. Backed by clinical research and UK seasonal UV data, this article explains exactly how daily broad-spectrum SPF helps prevent premature ageing, pigmentation, collagen breakdown, and long-term skin damage - while showing you how to build an effective winter skincare routine around it.

Learn how long skincare products really last, what the PAO symbol means, and how to store your skincare properly to keep formulas safe, stable, and effective. From Vitamin C and retinoids to cleansing balms and eye creams, this complete guide explains what causes products to expire, when a skincare fridge helps (and when it doesn’t), plus the warning signs a product has gone off.

Skincare acids can transform your skin - when you know which one to use. From glycolic acid for glow and texture, to salicylic acid for breakouts and PHAs for sensitive skin, this guide breaks down exactly what each acid does, who it’s best for, and how to use it safely for clearer, brighter, healthier-looking skin.

Men’s skin is biologically different - producing more oil, experiencing regular shaving stress, and often dealing with larger pores, congestion, and sensitivity. This complete guide breaks down exactly how to build an effective men’s skincare routine, from cleansing and hydration to shaving care, beard maintenance, and product layering. Whether you are starting from scratch or refining your current routine, discover the essential ingredients, routines, and expert-backed tips that help keep male skin clear, healthy, and protected every day

Your skin doesn’t need the same routine all year round - and treating it like it does could be holding your skin back. From winter dryness and barrier disruption to summer oiliness and breakouts, seasonal changes directly affect how your skin behaves. In this complete guide, we break down exactly how to adapt your skincare routine for spring, summer, autumn, and winter, including the products to switch, the ingredients to prioritise, and the signs your skin is giving you each season. Whether your skin is feeling dehydrated, congested, dull, or sensitive, this guide will help you build a routine that works with your skin all year long.

Your skin deserves more than a one-size-fits-all routine. This complete skincare guide breaks down exactly how to build an effective AM and PM routine based on your skin type - whether you’re oily, dry, combination, sensitive, or blemish-prone. From identifying your true skin type to choosing the right actives, layering products correctly, and avoiding the most common skincare mistakes, this guide gives you everything you need to create a routine that actually works. Featuring step-by-step routines, expert ingredient advice, and tailored product recommendations from The INKEY List.

Niacinamide is one of the most effective and well-tolerated ingredients for blemish-prone skin - and the science behind it is stronger than most people realise. This guide breaks down exactly how niacinamide helps reduce breakouts through four clinically backed mechanisms: calming inflammation, regulating excess oil, supporting the skin barrier, and helping fade post-breakout marks. We also answer the most searched questions around niacinamide and acne - including whether it causes purging (it doesn’t), whether it can worsen breakouts, and how to build it into a routine that actually works.

The INKEY Oat Cleansing Balm costs just 15p per cleanse - and that number changes everything. Clinically proven to remove waterproof makeup and SPF while supporting the skin barrier, this oat-powered formula delivers approximately 100 uses per tube for £15. In this guide, we break down why cleansing balms outperform wipes and foaming cleansers, what makes oat kernel oil so effective for sensitive skin, and why cost-per-use is the smartest way to shop skincare.

Discover what post-inflammatory hyperpigmentation (PIH) really is, why acne leaves dark marks behind, and how to fade them effectively. From Tranexamic Acid and Niacinamide to SPF and retinoids, this complete guide breaks down the best ingredients, routines, and prevention tips to help visibly reduce post-acne dark marks and support clearer, more even-looking skin.

A guide to how long tranexamic acid takes to work - from the first visible improvements at 2–4 weeks to significant fading of hyperpigmentation, dark spots, melasma, and post-blemish marks at 6–12 weeks. Discover the real results timeline, what affects your progress, and how to maximise results with INKEY’s 2% Tranexamic Acid Serum.

Red light therapy has become a popular non-invasive treatment for skin concerns like fine lines, redness, acne, and dullness. Using specific wavelengths of red and near-infrared light, it helps stimulate cellular energy, supporting collagen production, healing, and overall skin renewal.

In this guide, we explore how red light therapy works, the benefits backed by research, and key safety considerations. We’ll also highlight effective skincare alternatives that can deliver similar results, including clinically proven ingredients like retinoids, vitamin C, peptides, niacinamide, and ceramides — with targeted INKEY List products to help you achieve healthy, glowing skin without investing in a device.

Smart skinimalism is the 2026 skincare trend redefining results through simplicity. Backed by science, this approach prioritises skin barrier health and multi-functional ingredients over excessive layering. Discover why simplified routines can reduce irritation by up to 40% and how to build an effective, evidence-based 3-step routine for healthier, more resilient skin.

Struggling with persistent breakouts, pigmentation, or excess oil? The 360 Skin Clearing Serum is here to change your skincare game. This all-in-one formula is designed to visibly improve blemish-prone skin by targeting every stage of a breakouts.

If you struggle with breakouts, you’ve probably heard of these ingredients before: Salicylic Acid and Benzoyl Peroxide. Both are key for keeping skin clear and smooth, but they do so in totally different ways.

This in-depth guide breaks down how retinol helps fade acne scars, dark spots, and red marks — and how to choose the right INKEY retinol for your skin. Learn the difference between PIE, PIH, and true acne scars, how retinol works on each, and how to build a results-driven routine with realistic timelines. Whether you’re new to retinol or ready for advanced strength, discover science-backed solutions for clearer, more even-looking skin

Consider us your token skincare friend. Meet, Real Results with INKEY. This is our dedicated series where we pass off the mic to our very own customers, who will share their reviews and recommendations on some of our products.

Introducing your new hyperpigmentation hero - Mandelic Acid. A member of the Alpha Hydroxy Acid family, we’ve formulated this gentle treatment to target marks and scarring caused by breakouts as well as pigmentation concerns. 

There are a few reasons why acne scars occur. Firstly, not all acne will result in scarring and even if it does, there are plenty of treatments to reduce their appearance and help them disappear completely. Learn what can cause scarring, how to get rid of scarring and prevent the risk of them occurring.