ER Firming Serum (Retinol)
Serum

ER Firming Serum (Retinol)

Ilso

4.8(6 reviews)
$22.5330ml

A firming serum formulated with retinol, niacinamide, and multiple forms of hyaluronic acid to improve skin elasticity and reduce signs of aging. Suitable for those seeking anti-aging benefits with hydration.

Key Ingredients

WaterAqua

Solvent and base for formulations

Glycerin

Humectant that attracts and retains moisture

Active
Methylpropanediol

Solvent and humectant that enhances absorption

Hydrogenated PolyolefinHydrogenated Poly(C6-14 Olefin)

Emollient and skin conditioning agent

2-Hexanediol

Solvent and preservative booster

+ 15 more ingredients

Ingredient Effectiveness Data

Based on aggregated user reports across Seoul Sister's community

Panthenol (Vitamin B5)for sensitivity (sensitive skin)
100%
Niacinamide (Vitamin B3)for sensitivity (dry skin)
100%

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Frequently Asked Questions

What are the key ingredients in ER Firming Serum (Retinol)?

The key active ingredients in ER Firming Serum (Retinol) by Ilso include Glycerin (Humectant that attracts and retains moisture), Betaine (Humectant and skin conditioning agent), Niacinamide (Vitamin B3) (brightening, pore-minimizing, barrier-support), Macadamia Seed Oil (Emollient oil that moisturizes and softens skin), Chitosan (Film-forming agent and antimicrobial preservative booster). Based on Seoul Sister's analysis of 56+ user reports, key ingredients show 100% effectiveness for sensitivity in sensitive skin types. Seoul Sister tracks ingredient effectiveness across 5,800+ K-beauty products to provide data-backed recommendations.

Is ER Firming Serum (Retinol) good for sensitive skin?

ER Firming Serum (Retinol) is a Korean serum by Ilso. Sensitive skin compatibility depends on individual triggers and allergies. Seoul Sister's AI advisor Yuri analyzes all 20 ingredients against your specific skin type, concerns, and known allergens to provide a personalized compatibility score. Common irritant ingredients like fragrance, alcohol denat, and essential oils are flagged automatically.

Is ER Firming Serum (Retinol) good for oily skin?

For oily skin, the key factors in evaluating ER Firming Serum (Retinol) are comedogenic ingredient ratings, oil content, and finish type. This serum contains 11 active ingredients. Seoul Sister's database cross-references each ingredient's comedogenic rating (0-5 scale) against your skin type to identify potential pore-clogging risks. Subscribe for a personalized oily skin compatibility analysis.

How much does ER Firming Serum (Retinol) cost?

ER Firming Serum (Retinol) by Ilso starts from $22.53 USD for 30ml. Seoul Sister Pro members compare prices across 6+ authorized retailers including Olive Young, Soko Glam, and YesStyle to find the best deal, with automatic price drop alerts.

Where to buy ER Firming Serum (Retinol)?

ER Firming Serum (Retinol) by Ilso is available from authorized K-beauty retailers including Olive Young Global, Soko Glam, YesStyle, and Amazon. Prices start from $22.53 USD. Seoul Sister verifies retailer authenticity and tracks counterfeit indicators to help you buy genuine Korean skincare products.

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