Based on its formula, is this product safe for sensitive, acne-prone, or dry skin?

The toner is fragrance-free and packed with multiple low-molecular-weight hyaluronic acids that are well tolerated by dry and normal skin, but the presence of phenoxyethanol and caprylhydroxyamic acid can irritate very sensitive or acne-prone individuals, so a patch test is recommended before regular use.

What is the specific role and benefit of sodium hyaluronate and its derivatives in this toner?

Sodium hyaluronate and its derivatives (hydrolyzed, acetylated, hydroxypropyltrimonium, and cross-linked hyaluronic acid) act as powerful humectants that attract and retain water in the epidermis, improve skin elasticity, and provide a plumping, long-lasting hydration effect.

What is the optimal application frequency for this toner, and does it contain any controversial chemicals?

The toner is intended for twice-daily use, after cleansing and before serums or moisturizers, and its main preservatives are phenoxyethanol and caprylhydroxyamic acid, which are approved for cosmetic use but can be sensitising for some users; the rest of the formula avoids parabens, sulfates, and added fragrance.

肌ラボ,ロート製薬 • 170 mL

肌ラボ　極潤プレミアム

化粧水

Product Insights

The Hada Labo Gokujun Premium toner is a 170 ml, plastic-bottled hydrating lotion marketed in Japan. It combines a water base with humectants such as BG, pentylene glycol, and glycerin, and features an extensive line-up of hyaluronic acid derivatives, including sodium hyaluronate, hydrolyzed hyaluronic acid, acetylated hyaluronate, hydroxypropyltrimonium hyaluronate and a cross-linked 3D hyaluronic polymer to deliver deep, long-lasting moisture. While the formula is fragrance-free and generally suitable for dry skin, the inclusion of preservatives like phenoxyethanol and caprylhydroxyamic acid, plus several synthetic polymers, may cause mild irritation for very sensitive or acne-prone users, and the plastic packaging is not universally recyclable.

Comparative Analysis

Positioned as a premium, multi-hyaluronic-acid toner, it distinguishes itself in the Japanese skincare market by offering layered moisture technology without added fragrance, targeting consumers who prioritize intensive hydration.

Ingredients

水、BG、ペンチレングリコール、PPG-10メチルグルコース、DPG、ジグリセリン、ヒアルロン酸Na*、加水分解ヒアルロン酸*(ナノ化ヒアルロン酸)、アセチルヒアルロン酸Na*(スーパーヒアルロン酸)、ヒアルロン酸ヒドロキシプロピルトリモニウム*(肌吸着型ヒアルロン酸)、ヒアルロン酸クロスポリマーNa*(3Dヒアルロン酸)、乳酸球菌／ヒアルロン酸発酵液*(乳酸発酵ヒアルロン酸)、加水分解ヒアルロン酸Na*(浸透**型ヒアルロン酸)、加水分解ヒアルロン酸アルキル(C12-13)グリセリル*(ヒアロリペア(R))、スイゼンジノリ多糖体(サクラン(R))、ヒドロキシエチルウレア、ポリクオタニウム-51、加水分解水添デンプン、グリコシルトレハロース、ソルビトール、キシリチルグルコシド、無水キシリトール、イソペンチルジオール、キシリトール、カルボマー、キサンタンガム、コハク酸2Na、プロパンジオール、水酸化K、コハク酸、EDTA-2Na、カプリルヒドロキサム酸、フェノキシエタノール *8種のヒアルロン酸 **角質層まで

84%

35%

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