SkinCeuticals Glycolic 10 Renew Overnight

Product Overview

SkinCeuticals Glycolic 10 Renew Overnight is a leave-on exfoliant formulated with sugar-cane-derived glycolic acid — the smallest-molecular-weight AHA, enabling the deepest penetration relative to other hydroxy acids — combined with phytic acid, a natural antioxidant chelating agent from legumes and seeds. The 10% free acid value (FAV) concentration operates at the threshold validated in multiple peer-reviewed studies to produce clinically meaningful exfoliation without compromising barrier integrity in most skin types. Glycolic acid at this concentration disrupts calcium-mediated desmosome cohesion in the stratum corneum, accelerating shedding of accumulated corneocytes, and simultaneously stimulates epidermal growth factor receptor (EGFR) signalling to promote keratinocyte proliferation and collagen precursor synthesis in the dermis.

The addition of 2% phytic acid provides dual benefit: chelation of pro-oxidant metal ions that contribute to free radical generation, and mild tyrosinase inhibition that synergises with glycolic acid's exfoliation to reduce post-inflammatory hyperpigmentation and solar lentigines. The emollient base containing jojoba esters, sunflower seed wax, and tocopherol supports barrier repair during the nocturnal dosing period. Dermatologists and aesthetic practitioners in Singapore incorporate this product into multi-modal treatment protocols for photodamage, melasma, and pre-treatment skin preparation prior to chemical peels or laser resurfacing.

Formulation Specifications

Clinical Indications

• Photodamage and solar lentigines: 10% glycolic acid accelerates corneocyte desquamation to reduce sun spots in Fitzpatrick II–IV skin types within 4–8 weeks of consistent nocturnal use.
• Melasma adjunct therapy: Used as maintenance exfoliant between clinic-based peel or laser sessions in Singapore; phytic acid provides complementary tyrosinase inhibition.
• Skin texture refinement: Disrupts the hyperkeratotic surface layer in patients with rough, congested, or enlarged-pore presentations — consistent with the 37% texture improvement endpoint.
• Pre-procedure skin preparation: Applied nightly 4–6 weeks prior to medium-depth TCA peels or ablative laser to pre-thin stratum corneum and improve peel penetration uniformity.
• Acne and congestion: Reduces comedonal burden via follicular keratolysis; trace salicylic acid provides complementary lipid-soluble penetration into the pilosebaceous unit.
• Combination with retinoids: Alternated on separate nights with retinol in physician-directed regimens for complementary mechanisms — AHA exfoliation plus cell-turnover stimulation.

Frequently Asked Questions

Q: Is it safe to use 10% glycolic acid nightly?
A: Introduction at 2–3 nights per week for the first 2–4 weeks is recommended before progressing to nightly use. Transient tingling is expected and does not indicate intolerance; persistent erythema warrants reducing frequency and seeking dermatologist review.

Q: Does Glycolic 10 Renew Overnight replace professional chemical peels?
A: No. Home-use AHA at 10% FAV produces superficial exfoliation in the stratum corneum and upper epidermis. Professional peels at Singapore clinic settings reach deeper epidermal and papillary dermal levels. The overnight treatment functions as maintenance and preparation between professional treatments.

Q: Why is daily SPF mandatory when using this product?
A: AHAs increase UV sensitivity by reducing stratum corneum thickness. The HSA Singapore and FDA both require photosensitivity risk labelling on AHA cosmetics. Omitting SPF counteracts the product's brightening objectives. Minimum SPF 30 PA+++ is recommended by Singapore dermatology practice standards.

Q: Can patients with sensitive skin or rosacea use this?
A: Patients with active rosacea, compromised barriers, or active inflammatory acne should seek dermatologist assessment before use. Patch testing on the jawline for 48 hours prior to full-face application is advisable for any patient with known skin reactivity.

Q: Where is Glycolic 10 Renew Overnight available in Singapore?
A: Available through authorised SkinCeuticals medical channels in Singapore, including EMIS (Essential Medical International Supplies Pte Ltd). Not available in general consumer pharmacies.