A.H.C The First Diamond Ampoule
A.H.C The First Diamond Ampoule is a premium Korean skincare treatment formulated to revitalize and brighten the complexion. This concentrated ampoule leverages the hydrating power of Glycerin and Butylene Glycol to provide immediate moisture, while Cetyl Ethylhexanoate adds an emollient richness without a heavy, greasy feel. As part of A.H.C's specialized line, it aims to improve skin texture and radiance, making it a popular choice for those looking to combat dullness and signs of fatigue. The formulation includes PEG/PPG-17/6 Copolymer, which helps maintain a silky, smooth texture that absorbs efficiently into the skin. While it offers a luxurious, skin-plumping experience, those with acne-prone skin should pay close attention to the specific emulsifiers used. It provides a barrier-supporting feel thanks to the inclusion of fatty acids like stearic acid, making it an excellent option for users prioritizing anti-aging and deep hydration. Whether you are layering it under a moisturizer or using it as a targeted treatment, this ampoule aims to leave the skin feeling refined and refreshed.
Our Analysis
Our analysis of A.H.C The First Diamond Ampoule reveals a moderate comedogenic risk level. The formula contains three flagged ingredients: Cetearyl Alcohol, Stearic Acid, and Sorbitan Isostearate, each carrying an individual rating of 2/5. While these ingredients are common emollient and thickening agents, they can be problematic for those with highly reactive or congestion-prone skin. Specifically, Cetearyl Alcohol is generally safe, but its presence in a formula with other fatty acids can sometimes exacerbate pore-clogging for those sensitive to alcohols. Users struggling with active breakouts or closed comedones should proceed with caution.
Skin Type Recommendations
This ampoule is best suited for dry, dehydrated, or mature skin types that require extra emollience. It is not recommended for oily or severely acne-prone skin due to the moderate risk of pore-clogging ingredients. Sensitive skin types should patch test first to ensure no reactivity to the emulsifiers and fatty alcohols.
Flagged Ingredients
Fatty alcohol emollient with low-moderate comedogenicity on its own. However, when combined with Ceteareth-20, the synergistic effect can significantly increase pore-clogging potential (combined rating of 4).
Found in many butters; thickening agent with low-moderate risk.
Emulsifier with lower clog potential than Oleate.
Want Deeper Analysis?
Run our MACR (Multi-Axis Comedogenic Risk) analysis to get a comprehensive 5-axis risk assessment. This AI-powered analysis evaluates ingredients for Plugging Risk, Barrier Damage, Fungal Acne Risk, Oxidation Risk, and real-world User Reports — giving you personalized scores for your skin type.
