The Mirai Blog
AHA, BHA, PHA: What’s the Difference and Which One Is Right for Your Skin?
In the ever-evolving world of skincare, chemical exfoliants have become non-negotiable for smoother, brighter, and clearer skin. Among them, AHA, BHA, and PHA stand out as the most popular and effective. But what exactly do they do? And more importantly, how do you know which one is best for your skin? Let’s break down the science and benefits behind these exfoliating acids and help you choose the right one for your skincare routine. Understanding Chemical Exfoliants Chemical exfoliants dissolve dead skin cells on the surface or within pores, promoting cell turnover without the harshness of physical scrubs. Unlike grainy exfoliators that can cause micro-tears in the skin, acids like AHA, BHA, and PHA offer a more gentle, controlled approach when used correctly. Each type targets different layers of the skin and is suitable for distinct concerns. What Is AHA (Alpha Hydroxy Acid)? AHAs are water-soluble acids derived from natural substances like sugarcane, milk, or fruit. They primarily work on the skin's surface to: Gently loosen dead skin cells Brighten dull complexions Fade pigmentation and acne scars. Improve fine lines and texture. Best for: Dry, dull, sun-damaged, or aging skinCommon types: Glycolic acid, lactic acid, mandelic acid AHAs are ideal for those looking to restore radiance and smoothness, but they may cause sensitivity, especially in higher concentrations. Always pair with sunscreen during the day. What Is BHA (Beta Hydroxy Acid)? BHAs are oil-soluble acids, which means they can penetrate deeper into pores to unclog sebum and debris. Salicylic acid is the most common BHA and offers both exfoliating and anti-inflammatory benefits. Best for: Oily, acne-prone, or combination skinKey benefits: Deep pore cleansing Reduces blackheads and whiteheadsSoothes inflammation from breakouts Because BHAs work below the surface, they’re especially effective in managing blemishes and congestion. They're also gentler on sensitive skin compared to AHAs, despite their deep-cleaning action. What Is PHA (Polyhydroxy Acid)? PHAs are next-generation exfoliants that provide similar results to AHAs but with larger molecules, making them gentler and slower to penetrate. This translates into less irritation while still promoting cell turnover. Best for: Sensitive, dry, or rosacea-prone skinBenefits include: Mild exfoliation Hydration and barrier support Antioxidant protection Common PHAs include gluconolactone and lactobionic acid. They’re perfect for beginners or anyone prone to redness and irritation. How to Choose the Right One for Your Skin Type Dry or mature skin: AHA can restore brightness and smooth texture Oily or acne-prone skin: BHA helps decongest pores and calm inflammation Sensitive or compromised skin: PHA offers gentle exfoliation with hydration You can also layer or rotate these acids depending on your needs—just ensure you don’t over-exfoliate. Start slow, patch test, and build up frequency based on your skin's response. Finding the Right Products At Mirai-Skin, we carry a curated selection of Korean skincare products featuring AHA, BHA, and PHA that are dermatologist-tested, pH-balanced, and ideal for Western skin types. Whether you're dealing with texture issues, hormonal acne, or just need a glow boost, there’s a science-backed exfoliant that fits your journey.
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The Best Korean Face Wash for Every Skin Type: Oily, Dry, Sensitive & More
Korean skincare offers some of the most thoughtfully formulated cleansers in the world. By choosing the best Korean face wash for your skin type, you're taking the first step toward a healthier, glowing complexion.
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The Evolution of Asian Makeup Trends: From Tradition to Modern K-Beauty
Asian makeup has undergone a remarkable transformation over the centuries, evolving from the ceremonial beauty rituals of ancient dynasties to today's cutting-edge, skincare-infused makeup innovations.
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Korean Moisturizer for Dry Skin: What Ingredients Work?
If you're searching for deep, lasting hydration, a Korean moisturizer may be your skin's best ally. But not all moisturizers are created equal. The key lies in the ingredients.
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How to Care for Fair Skin: Tips for Preventing Sensitivity, Redness, and Hyperpigmentation
Fair skin is naturally delicate and more reactive to sun exposure, environmental stressors, and certain active ingredients. Its lighter pigmentation often means less natural UV protection, which makes it more prone to redness, irritation, and post-inflammatory hyperpigmentation. With a mindful approach and gentle, targeted products, fair skin can stay radiant, calm, and even-toned. Understanding the Needs of Fair Skin Fair skin has lower melanin levels, making it more vulnerable to UV damage and sensitivity. It often reacts strongly to aggressive skincare, leading to redness, inflammation, or dryness. This skin type also tends to show signs of irritation and pigmentation more quickly after breakouts or sunburns. Caring for fair skin effectively means prioritizing barrier support, sun protection, and anti-inflammatory skincare. Daily Skincare Tips to Protect and Soothe Fair Skin 1. Start with a Gentle, Hydrating Cleanser Avoid harsh foaming cleansers that can strip the skin barrier. Instead, use a pH-balanced gel formula that lifts impurities without causing tightness or irritation. Recommended: belif Herb Bouquet Gel Cleanser This refreshing gel cleanser combines gentle botanical ingredients that cleanse without disrupting the skin’s moisture balance—perfect for fair, sensitive skin types. 2. Soothe and Strengthen with Centella Asiatica After cleansing, apply a calming toner or essence that helps reduce redness and rebuild the skin barrier. Centella Asiatica is a top ingredient for reducing inflammation and promoting healing. Recommended: Elizavecca Centella Asiatica Pure This minimalist formula is packed with 100% Centella Asiatica extract, offering powerful soothing benefits without unnecessary additives—ideal for highly reactive fair skin. 3. Moisturize to Lock in Hydration Even oily or combination fair skin needs moisture. Choose lightweight but deeply hydrating creams that contain barrier-repairing ingredients like panthenol, hyaluronic acid, or beta-glucan. 4. Protect with a Mineral-Based Sunscreen Sun exposure is the biggest threat to fair skin, leading to premature aging, redness, and pigmentation. A mineral sunscreen is ideal for sensitive complexions due to its soothing and non-irritating formulation. Recommended: ETUDE Soonjung Director's Mineral Filter Sun Cream This gentle yet effective SPF offers mineral UV filters combined with the calming power of panthenol and madecassoside—perfect for daily protection without white cast or irritation. Additional Tips to Prevent Redness and Hyperpigmentation Avoid over-exfoliation. Limit chemical exfoliants to once a week and choose milder acids like lactic acid or PHA. Be ingredient-conscious. Skip alcohol-heavy toners and artificial fragrances that can trigger flare-ups. Use barrier-repair masks weekly for deep hydration and to reduce signs of irritation. Layer slowly. Introduce new products one at a time to monitor how your skin reacts. Final Thoughts Fair skin is beautiful, but it requires thoughtful care to stay healthy and glowing. By using gentle, skin-calming products and practicing consistent sun protection, you can prevent common issues like redness and pigmentation while supporting your skin’s natural resilience. At Mirai-Skin, we offer carefully selected Korean skincare essentials formulated to help fair complexions thrive, without compromising sensitivity or comfort.
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How to Choose the Best Neck Cream for Your Skin Type: A Korean Beauty Guide
The neck is one of the first areas to show signs of aging, yet it's often overlooked in daily skincare routines. In Korean beauty, the neck is treated with the same care and innovation as the face, using advanced ingredients and skin-type-specific solutions.
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Why d'Alba Is Taking Over the K-Beauty Scene: The Power of White Truffle Skincare
With cult-favorite products that deliver visible results, d'Alba is quickly becoming a staple for beauty enthusiasts in search of glow, hydration, and anti-aging benefits in one refined experience.
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Best Eye Cream for Sensitive Skin: Gentle Korean Formulas That Deliver
The delicate skin around the eyes is already thin and prone to irritation, and when sensitivity is added to the mix, it becomes essential to choose a formula that soothes, hydrates, and protects without triggering redness or stinging.
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Dry Lips Vitamin Deficiency: Which Vitamins Your Body Might Be Missing
Dry, cracked lips are not just an uncomfortable nuisance — they can also signal underlying health issues. Understanding which vitamins are crucial for maintaining soft, healthy lips can help restore balance to your body and skin.
Learn moreWelcome to our Reviews section where we go beyond the labels.
Here, we write in depth, experience-based reviews of some of the most popular skincare and beauty products on the market. Whether it’s a viral Korean serum or a cult favorite lip mask, we test, analyze, and share our honest impressions so you can shop with more confidence and clarity.
Our goal is to help you understand what works, for whom, and why — no fluff, no jargon, just real insights from people who love skincare as much as you do.