Retriderm Serum

Retriderm Serum provides more modest improvements to the skin than Retriderm ULTRA due to its lower retinol concentration, but side effects such as dryness, burning, itching and redness are minimal, making it more suitable for those with sensitive skin.

Images


Effects


Grade Level of Evidence
A Double-blind, controlled study with more than 50 participants.
B Controlled study that is single-blind or has less than 50 participants.
C Controlled or comparative study.
D Uncontrolled or observational study.
Grade Effect Size of Effect Comments

B

Skin lightening

Moderate

Reduced hyperpigmentation apparent after 8 weeks of treatment.

B

Reduced actinic keratoses

Mild

Improved the appearance of actinic keratoses at 8 weeks of treatment.

D

Smoother skin

Moderate

Lowered the tactile roughness of the skin significantly by the 4th week of treatment.

D

Tighter skin

Moderate

Decreased skin laxity significantly by the 4th week of treatment.

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Ingredients


Water, Soluble Collagen, Glycerin, Hydrolyzed Elastin, Sodium Hyaluronate, Retinol (0.5%), Tocopheryl Acetate, Linum Usitatissimum Seed (Linseed) Extract, Octoxynol-9, Polysorbate 20, Propylene Glycol, Xanthan Gum, Magnesium Aluminum Silicate, Quaternium-15, Yellow 5 (CI 19140)
NAME ANTIOXIDANT UV PROTECTION COMEDOGENIC IRRITANT SAFETY
AQUA (SOLVENT) 0 0 ALLOWED (SOURCE)
SOLUBLE COLLAGEN (ANTISTATIC, FILM FORMING, HAIR CONDITIONING, HUMECTANT, SKIN CONDITIONING) NO DATA NO DATA ALLOWED (SOURCE)
GLYCERIN (DENATURANT, HUMECTANT, PERFUMING, SOLVENT) 0 (SEE SOURCES) 0 (SEE SOURCES) ALLOWED (SOURCE)
HYDROLYZED ELASTIN (ANTISTATIC, FILM FORMING, HAIR CONDITIONING, HUMECTANT, SKIN CONDITIONING) NO DATA NO DATA ALLOWED (SOURCE)
SODIUM HYALURONATE (HUMECTANT, SKIN CONDITIONING) 0 (SEE SOURCES) 0 (SEE SOURCES) ALLOWED (SOURCE)
RETINOL (SKIN CONDITIONING) NO DATA NO DATA ALLOWED (SOURCE)
TOCOPHERYL ACETATE (ANTIOXIDANT, SKIN CONDITIONING) 0 (SEE SOURCES) 0 (SEE SOURCES) ALLOWED (SOURCE)
LINUM USITATISSIMUM SEED EXTRACT (PERFUMING, SKIN CONDITIONING) NO DATA NO DATA ALLOWED (SOURCE)
OCTOXYNOL-9 (EMULSIFYING, SURFACTANT) 1 (SEE SOURCES) NO DATA ALLOWED (SOURCE)
POLYSORBATE 20 (EMULSIFYING, SURFACTANT) 0 (SEE SOURCES) 0 (SEE SOURCES) ALLOWED (SOURCE)
PROPYLENE GLYCOL (HUMECTANT, SKIN CONDITIONING, SOLVENT, VISCOSITY CONTROLLING) 0 (SEE SOURCES) 0 (SEE SOURCES) ALLOWED (SOURCE)
XANTHAN GUM (BINDING, EMULSIFYING, EMULSION STABILISING, GEL FORMING, SKIN CONDITIONING, SURFACTANT, VISCOSITY CONTROLLING) NO DATA NO DATA ALLOWED (SOURCE)
MAGNESIUM ALUMINUM SILICATE (ABSORBENT, ANTICAKING, OPACIFYING, VISCOSITY CONTROLLING) 0 (SEE SOURCES) 0 (SEE SOURCES) ALLOWED (SOURCE)
QUATERNIUM-15 (PRESERVATIVE) NO DATA NO DATA ALLOWED (SOURCE)
CI 19140 (COSMETIC COLORANT) NO DATA NO DATA ALLOWED (SOURCE)

Clinical Studies


Treatment of facial photodamage using a novel retinol formulation.

Products

Retriderm ULTRA (1% retinol)

Retriderm Serum (0.5% retinol)

Cetaphil Cleanser

Trial Design

Pilot Study: Open-label, uncontrolled

Low-Concentration Retinol Study: Randomized, double-blind, controlled

Duration

Pilot Study: 8 weeks or 12 weeks

Low-Concentration Retinol Study: 8 weeks

Subjects

Pilot Study: 11 subjects with moderate to severe photodamage or wrinkles.

Low-Concentration Retinol Study: 30 women aged 36-63 years, of Fitzpatrick phototypes II or III and with moderate to severe facial photodamage and facial wrinkles.

Regimen

Pilot Study: Applied Retriderm ULTRA once per day in the evening and sunscreen in the morning

Low-Concentration Retinol Study: Applied Cetaphil cleanser and sunblock (SPF 30) to the face each morning and Cetaphil cleanser, moisturizer and Retriderm Serum or the vehicle to the face each evening

Methods of Assessment

Overall photodamage: Assessed using Glogau's 4-point scale

Wrinkles: Assessed using Rao-Goldman 5-point scale and photogenerated scores by the VISIA system

UV spots: Assessed using photogenerated scores by the VISIA system

Signs of photoaging: Graded on a 5-point scale

Facial skin quality: Subjects' self-evaluations

Side Effects

Pilot Study: Subjects informally reported some irritation to the skin.

Low-Concentration Retinol Study: Burning, dryness, itching and redness were negligible in most cases and only occasionally mild.

Effects observed in this study:

Pilot study (Retriderm ULTRA)

All subjects had improved in overall photodamage, all had reduced crow's feet, 90% had reduced cheek wrinkles and 70% had reduced under-eye and forehead wrinkles. All subjects also had improved skin elasticity as assessed by investigators, and half of the subjects reported at least a 1-grade improvement in the suppleness of their skin.

Investigators found increased skin brightness in 90% of subjects and a decrease of mottled pigmentation in 80% of subjects. 50% and 25% of subjects also noted at least 1-grade improvements in the lustre and colour of their skin, respectively. 40% of subjects were considered to have reduced skin roughness according to investigator assessments.

Low-concentration retinol study (Retriderm Serum)

Hyperpigmentation was significantly lower compared to treatment with the vehicle, and when compared to pre-treatment levels. The improvement of actinic keratoses was significantly superior to that of the vehicle, and when compared to pre-treatment scores.

However, improvements in skin laxity, roughness, moistness, oiliness, texture, thickness and wrinkles were not significantly different from that observed with vehicle treatment. VISIA analysis of wrinkles and spots also found no significant differences from baseline at the end of 8 weeks.