Medik8 Crystal Retinal 3 Night Serum 1.0 oz - 30 ml
Analysis updated August 2026 · How Scout scores
At a glance
Summary
This serum contains several beneficial ingredients such as squalane, sodium hyaluronate, and retinal, which are known for their moisturizing and anti-aging properties. However, the presence of phenoxyethanol, a preservative that can be irritating to some skin types, slightly detracts from its overall safety profile. The product is moderately processed, which also influences its rating.
Key ingredients 8
SqualaneVery Good
Squalane is a highly effective emollient and natural antioxidant. It mimics the skin's natural oils, making it an excellent moisturizer. It is non-comedogenic and suitable for all skin types.
Risks
There are minimal risks associated with squalane.
Benefits
It helps to lock in moisture and improve skin elasticity.
Tetrahexyldecyl AscorbateVery Good
This is a stable form of Vitamin C that penetrates the skin effectively. It helps to brighten the skin and reduce signs of aging. It is known for its antioxidant properties.
Risks
There are minimal risks, though it may cause irritation in sensitive skin.
Benefits
It provides antioxidant protection and improves skin tone.
RetinalVery Good
Retinal is a potent form of Vitamin A that promotes cell turnover. It helps to reduce wrinkles and improve skin texture. It is effective in anti-aging treatments.
Risks
It may cause irritation or dryness, especially in sensitive skin.
Benefits
It enhances skin renewal and reduces signs of aging.
Caprylic/Capric TriglycerideGood
This ingredient is derived from coconut oil and glycerin. It is used as an emollient and helps to moisturize and replenish the skin. It is generally well-tolerated and non-irritating.
Risks
There are minimal risks, though it may cause breakouts in very sensitive skin.
Benefits
It provides a lightweight, non-greasy moisturizing effect.
GlycerinGood
Glycerin is a humectant that attracts moisture to the skin. It helps maintain hydration and improves skin barrier function. It is well-known for its moisturizing properties.
Risks
Rarely, it may cause irritation in very sensitive skin.
Benefits
It enhances skin hydration and smoothness.
Sodium HyaluronateGood
Sodium Hyaluronate is a form of hyaluronic acid that penetrates the skin to provide deep hydration. It helps to plump the skin and reduce the appearance of fine lines. It is highly effective in retaining moisture.
Risks
There are minimal risks, though it may cause irritation in very sensitive skin.
Benefits
It significantly boosts skin hydration and smoothness.
Aqua (Water)Neutral
Water is a common solvent used in cosmetic formulations. It helps dissolve other ingredients and provides a base for the serum. It does not have any active benefits or risks.
Risks
There are no significant risks associated with water in cosmetics.
Benefits
Water helps in the application and absorption of the serum.
PhenoxyethanolBad
Phenoxyethanol is a preservative used to prevent microbial growth. It is considered safe in low concentrations but can be irritating to the skin. It is often used as an alternative to parabens.
Risks
It may cause irritation or allergic reactions in sensitive individuals.
Benefits
It helps to preserve the product and extend its shelf life.
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