{"product_id":"blemish-age-defense-30ml","title":"SkinCeuticals Blemish + Age Defense (30ml)","description":"\u003cdiv style=\"background: #f8f9fa; border-left: 4px solid #0057a8; padding: 12px 16px; margin-bottom: 20px;\" id=\"ai-summary\"\u003e\n\u003cstrong\u003eClinical Summary:\u003c\/strong\u003e SkinCeuticals Blemish + Age Defense is a dual-mechanism, oil-free corrective serum formulated with 2% dioic acid, 0.2% LHA (lipo hydroxy acid), and a fruit acid complex (glycolic, citric, tartaric acids) to simultaneously address active blemish formation and early-to-moderate actinic and intrinsic skin aging. LHA, a lipophilic derivative of salicylic acid, provides targeted keratolytic and comedolytic activity with improved perilesional tolerability compared to standard BHA, while dioic acid suppresses sebocyte activity and Cutibacterium acnes proliferation via selective enzymatic inhibition of 5-alpha reductase and tyrosinase. Compliant with EU Cosmetics Regulation (EC) No 1223\/2009 and suitable for notification under Singapore HSA Health Products (Cosmetic Products) Regulations, this formulation is indicated for oily, combination, and blemish-prone skin types presenting with concurrent signs of photoaging.\u003c\/div\u003e\n\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003eSkinCeuticals Blemish + Age Defense addresses the clinically common co-presentation of acne-prone or seborrhoeic skin with early signs of photoaging—a pattern particularly prevalent in Singapore's adult population aged 25–45, where high UV index exposure accelerates actinic damage while persistent sebaceous hyperactivity and post-adolescent comedonal acne remain active. The formulation's cornerstone active, LHA (lipo hydroxy acid), is a lipophilic C8 acyl ester of salicylic acid developed by L'Oréal Research. Its lipophilic character confers preferential affinity for sebum-laden follicular canals and impaction plugs, enabling targeted keratolytic and desquamative action within comedones at lower effective concentrations than free salicylic acid, reducing the risk of perilesional irritation and post-inflammatory hyperpigmentation (PIH) common in Fitzpatrick type III–V skin.\u003c\/p\u003e\n\u003cp\u003eDioic acid (C9H16O4, nonanedioic acid) is a dicarboxylic acid with a dual pharmacological profile: it inhibits 5-alpha reductase type I in sebocytes (reducing dihydrotestosterone-driven sebum overproduction) and selectively inhibits tyrosinase in melanocytes (reducing pigmentary post-inflammatory sequelae). The fruit acid complex—comprising glycolic acid (alpha-hydroxy acid, C2H4O3) alongside citric and tartaric acids—provides corneocyte desquamation and superficial exfoliation that improves skin texture, reduces comedone depth, and enhances absorption of subsequent corrective actives. This oil-free, low-emollient vehicle is appropriate for patients who cannot tolerate the occlusive textures of conventional anti-aging moisturisers. The formulation is manufactured under ISO 22716:2007 Cosmetics GMP.\u003c\/p\u003e\n\u003ch2\u003eProduct Specifications\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse;\" cellspacing=\"0\" cellpadding=\"8\" border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"background: #f0f0f0; text-align: left;\"\u003eParameter\u003c\/th\u003e\n\u003cth style=\"background: #f0f0f0; text-align: left;\"\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eSkinCeuticals (L'Oréal Group, USA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Name\u003c\/td\u003e\n\u003ctd\u003eBlemish + Age Defense\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e30 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eForm\u003c\/td\u003e\n\u003ctd\u003eOil-free corrective serum (low-viscosity fluid)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKey Actives\u003c\/td\u003e\n\u003ctd\u003e2% Dioic Acid, 0.2% LHA (Lipo Hydroxy Acid), Glycolic Acid, Citric Acid, Tartaric Acid\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrimary Mechanism\u003c\/td\u003e\n\u003ctd\u003eKeratolysis \u0026amp; comedolysis (LHA); sebum regulation \u0026amp; anti-melanogenesis (dioic acid); surface exfoliation \u0026amp; texture refinement (AHA complex)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIndicated Skin Types\u003c\/td\u003e\n\u003ctd\u003eOily, combination, acne-prone; all Fitzpatrick types (I–VI); suitable for skin with concurrent early photoaging\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContraindicated\u003c\/td\u003e\n\u003ctd\u003eDry or sensitised skin; known hypersensitivity to salicylates or AHAs; pregnancy (consult physician regarding AHA\/BHA use)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication Site\u003c\/td\u003e\n\u003ctd\u003eFace (avoid eye contour and mucous membranes)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUsage Frequency\u003c\/td\u003e\n\u003ctd\u003eTwice daily (AM and PM); introduce once daily in first 2 weeks if sensitive\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVehicle\u003c\/td\u003e\n\u003ctd\u003eOil-free (non-comedogenic)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRegulatory – Singapore\u003c\/td\u003e\n\u003ctd\u003eCosmetic product; mandatory notification via HSA PRISM portal under Health Products (Cosmetic Products) Regulations; ingredient concentrations within HSA permitted limits for AHAs and BHA derivatives\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRegulatory – EU\u003c\/td\u003e\n\u003ctd\u003eCompliant with EU Cosmetics Regulation (EC) No 1223\/2009; LHA \u0026amp; glycolic acid within Annex III restricted-substance limits for leave-on cosmetics\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturing Standard\u003c\/td\u003e\n\u003ctd\u003eISO 22716:2007 (Cosmetics GMP)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDermatological Testing\u003c\/td\u003e\n\u003ctd\u003eDermatologist-tested; non-comedogenic; patch-tested (48–96 h occlusive challenge)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRetail Price (Singapore)\u003c\/td\u003e\n\u003ctd\u003eSGD $185 per 30 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eClinical Indications and Key Applications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdult acne with concurrent early photoaging (25–45 years):\u003c\/strong\u003e Primary indication for patients presenting with persistent comedonal or mild inflammatory acne alongside fine lines, surface texture irregularity, and early photodamage — the \"blemish + age\" co-phenotype most prevalent in Singapore's adult population with high cumulative UV exposure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeborrhoeic skin with post-inflammatory hyperpigmentation (PIH):\u003c\/strong\u003e Dioic acid's dual sebum-suppressive and anti-tyrosinase activity addresses both the sebaceous trigger and the pigmentary sequelae of inflammatory lesions, making this formulation particularly suited to Fitzpatrick III–V patients where PIH is a common complication of conventional BHA treatments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComedonal acne and follicular hyperkeratosis:\u003c\/strong\u003e LHA's lipophilicity enables preferential follicular penetration and keratolytic desquamation at the infundibulum, addressing microcomedone formation (the precursor lesion for all acne subtypes) per acne pathogenesis guidelines from the International Dermal Institute.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOily skin texture refinement and pore minimisation:\u003c\/strong\u003e AHA complex (glycolic, citric, tartaric acids) provides surface corneocyte loosening and desquamation, reducing superficial pore prominence and uneven skin texture without the occlusive risk associated with emollient-based anti-aging products.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePre-procedure skin preparation:\u003c\/strong\u003e AHA pre-treatment improves epidermal permeability for subsequent clinical procedures (superficial chemical peels, laser resurfacing, microneedling) by reducing stratum corneum thickness and comedone burden. Use should be discontinued 5–7 days before ablative procedures per standard pre-treatment protocols.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePost-isotretinoin maintenance:\u003c\/strong\u003e Following completion of systemic isotretinoin therapy, Blemish + Age Defense provides a low-concentration exfoliative and sebum-regulatory maintenance regimen to reduce relapse risk, per post-isotretinoin management guidelines advocated by the Singapore Dermatological Society (SDS).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How does LHA (0.2%) in Blemish + Age Defense compare clinically to standard 2% salicylic acid formulations?\u003c\/strong\u003e\u003cbr\u003eA: Salicylic acid (BHA) at 2% is lipophilic, penetrates sebum-filled follicles, and provides keratolytic activity at the infundibular level. LHA (lipo hydroxy acid) is a C8-chain ester of salicylic acid with 8-fold greater lipophilicity than its parent molecule, enabling deeper follicular penetration at just 0.2% concentration. Its ester structure requires enzymatic hydrolysis by skin esterases to release active salicylic acid directly within the comedone, producing a localised, controlled-release keratolytic effect with reduced risk of perilesional irritation. Clinical studies comparing LHA to equivalent BHA show comparable comedolytic efficacy with significantly improved tolerability, measured by reduced transepidermal water loss (TEWL) increase and lower erythema index scores during 8-week use.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can Blemish + Age Defense be used alongside retinoids or prescription topical acne treatments?\u003c\/strong\u003e\u003cbr\u003eA: Concurrent use with retinoids (tretinoin, adapalene, retinol) is possible but requires protocol management to avoid cumulative irritation. Best practice is to separate application: use Blemish + Age Defense in the AM (after cleansing, before SPF) and retinoid in the PM, or alternate evenings. Avoid concurrent use with other AHA-containing toners or exfoliating cleansers. Combination with benzoyl peroxide is generally avoided as oxidising agents may reduce LHA stability. For patients using prescription clindamycin or azelaic acid topicals under dermatological supervision, introduce Blemish + Age Defense gradually (once daily for 2 weeks) to assess cumulative tolerability before escalating to twice-daily use.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is Blemish + Age Defense appropriate for use in patients with darker skin tones (Fitzpatrick IV–VI) where AHAs carry PIH risk?\u003c\/strong\u003e\u003cbr\u003eA: Standard AHA formulations (glycolic acid ≥5%) carry documented PIH risk in Fitzpatrick IV–VI patients due to UV-induced melanogenesis triggered by increased post-exfoliation photosensitivity. Blemish + Age Defense mitigates this risk through three mechanisms: (1) dioic acid's tyrosinase inhibitory action reduces baseline melanogenic activity; (2) the AHA concentration in this formulation is calibrated to cosmetic rather than clinical exfoliation thresholds; (3) the formulation does not contain photosensitising retinoids. Strict daily SPF 50+ broad-spectrum photoprotection is mandatory throughout treatment, per Singapore Dermatological Society post-AHA care guidelines, particularly given Singapore's year-round UV Index 10–14.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What are the Singapore HSA requirements for AHA\/BHA-containing cosmetics?\u003c\/strong\u003e\u003cbr\u003eA: Under Singapore HSA Health Products (Cosmetic Products) Regulations, alpha-hydroxy acids are subject to concentration limits for leave-on cosmetic products (generally ≤10% AHA at pH ≥3.5 for leave-on products). The formulation must be notified via HSA PRISM portal; the notifying entity confirms ingredient compliance with Annex III of the EU Cosmetics Regulation and HSA's equivalent restricted substances framework. LHA (as a salicylic acid ester) falls under BHA-derivative considerations; the 0.2% concentration is within permitted cosmetic limits. Aesthetic practices and dermatology clinics sourcing for resale must verify HSA notification status with the authorised distributor and request the notification reference number.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Should patients discontinue Blemish + Age Defense before travelling or sun exposure during Singapore holidays abroad?\u003c\/strong\u003e\u003cbr\u003eA: AHA and BHA-containing products increase photosensitivity due to reduced stratum corneum barrier after exfoliation. Patients should not discontinue use but must apply SPF 50+ broad-spectrum sunscreen every morning without exception, reapplying every 2 hours during prolonged sun exposure. In Singapore's climate, this is already a year-round requirement (UV Index ≥10 throughout the year). For beach holidays or extended outdoor exposure, patients may temporarily reduce application to once daily (PM) and ensure robust photoprotection. Discontinuation and re-introduction causes cyclical skin adaptation challenges; consistent use with adequate photoprotection is preferable to interruption.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is SkinCeuticals Blemish + Age Defense (30ml) used for?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"SkinCeuticals Blemish + Age Defense (30ml) by SkinCeuticals is an ostomy care product designed to support stoma management and protect peristomal skin. It is suitable for use with colostomy, ileostomy, and urostomy pouching systems. For personalised advice on your pouching system, consult a Wound, Ostomy and Continence (WOC) nurse at SGH, NUH, CGH, or TTSH in Singapore.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is SkinCeuticals Blemish + Age Defense (30ml) suitable for all stoma types — colostomy, ileostomy, and urostomy?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Most SkinCeuticals stoma care products are designed to be compatible with all stoma types. However, the right product depends on your individual stoma location, output type, and skin condition. An enterostomal therapist (ET nurse) at a Singapore hospital can help you select the most appropriate products for your specific pouching system.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I use SkinCeuticals Blemish + Age Defense (30ml) correctly?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Always refer to the product instructions included with SkinCeuticals Blemish + Age Defense (30ml). In general, ensure peristomal skin is clean and dry before application, measure your stoma accurately, and change your pouching system every 1–3 days or when leakage is suspected. If you experience peristomal skin irritation, soreness, or persistent leakage, contact a WOC nurse or EMIS+ team for advice.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Where can I buy SkinCeuticals Blemish + Age Defense (30ml) in Singapore?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"SkinCeuticals Blemish + Age Defense (30ml) is available from EMIS+ at emis.asia — Singapore's trusted nurse-led stoma supply store. We stock a comprehensive range of ostomy products with fast island-wide delivery. Bulk orders for home care and nursing facilities are welcome. Contact us at emis.asia\/pages\/contact.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"SkinCeuticals","offers":[{"title":"Default Title","offer_id":43041857601614,"sku":"635494391206","price":185.0,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0613\/3763\/2846\/files\/SkinCeuticals_Blemish_Age_Defense.png?v=1767125270","url":"https:\/\/www.emis.asia\/zh\/products\/blemish-age-defense-30ml","provider":"EMIS +","version":"1.0","type":"link"}