Vitamin C is one of the most recommended ingredients in skincare. And one of the most misunderstood. In this deep-dive, Dr. Linda Brand (MD) explains how Vitamin C actually behaves in skin - including L-ascorbic acid vs derivatives, percentage myths, oxidation, layering with peptides and retinoids, acne-safe options, and why stability matters more than strength. This is not a product list. This is structural education. -- LINKS -- (When available, I use affilliate links and may earn a small commission). * Visit my shop to see my favorite products: https://shopmy.us/lindabrandbeauty Shop everything mentioned in this video here: https://shopmy.us/collections/4069674 MEDIK8 | C-Tetra Advanced: https://go.shopmy.us/p-43987018 C-Tetra™ Luxe: https://go.shopmy.us/p-43987094 MEDIK8 | Super C Ferulic: https://go.shopmy.us/p-43987095 PAULA'S CHOICE | C15 Super Booster Serum: https://go.shopmy.us/p-43987116 PAULA'S CHOICE | 25% Vitamin C + Glutathione Clinical Serum: https://go.shopmy.us/p-43987118 MAD HIPPIE | Vitamin C Serum: https://go.shopmy.us/p-43987138 The Brightening SerumBrightening & Firming Treatment: https://go.shopmy.us/p-43987150 Glow Maker Vitamin C Serum: https://go.shopmy.us/p-43987181 REMEDY SKIN | Remedy for Daily Defense - 15% Vitamin C Complex Brightening Serum: https://go.shopmy.us/p-44002699 INNISFREE | Green Tea Enzyme Vitamin C Brightening Serum: https://go.shopmy.us/p-43987185 DERMALOGICA | Skin Smoothing Cream: https://go.shopmy.us/p-43987190 PAULA'S CHOICE | Radiance Renewal Mask: https://go.shopmy.us/p-43988455 PAULA'S CHOICE | CelluarYouth Age-Disrupting Longevity Serum: https://go.shopmy.us/p-44002731 Shop more of my favorite products here: https://shopmy.us/lindabrandbeauty Discount Codes: Lumeo (Code: LINDABRAND15): https://go.shopmy.us/p-37603237 BeautyBio (Code: LINDABRAND15): https://go.shopmy.us/p-38114822 Epsom-It (Code: LINDABRAND15): https://go.shopmy.us/p-38114856 * CONTENT CREATOR? - Enable your audience to shop your product recommendations while building meaningful partnerships with world-class brands: https://shopmy.us/join/lindabrandbeauty Disclaimer: This content is based on my personal experience and professional opinion as a medical doctor and skincare enthusiast. It is not intended to replace medical advice, diagnosis, or treatment. Always consult a qualified healthcare professional for personalized medical guidance. Some links may be affiliate links, which means I may earn a small commission at no extra cost to you. This helps support my channel and allows me to continue creating independent, honest reviews. All opinions remain my own. Timestamps: 00:00 Intro Vitamin C 00:52 Chapter 1 - Types of Vitamin C 03:32 Chapter 2 - Which Vitamin C Builds Collagen Best? 04:50 Chapter 3 - L-Ascorbic Acid VS Derivatives 06:40 Chapter 4 - Vitamin C Tingling & Irritation 07:55 Chapter 5 - Collagen Co-Factors & Formula Design 09:05 Chapter 6 - Can You Layer Vitamin C With Peptides, Retinoids, Copper 11:39 Clinical Pearl 11:49 Chapter 7 - Vitamin C For Acne-Prone And Sensitive Skin 12:31 Chapter 8 - How To Start Vitamin C Without Damaging Your Skin Barrier 12:54 Chapter 9 - Shift Moment 13:16 Chapter 10 - My Final Thoughts SOCIAL MEDIA: TikTok: @lindabrandbeauty Instagram: linda.brand.beauty Facebook: lindabrandbeauty #lindabrandbeauty email: lindabrandbeauty@gmail.com (business inquiries) Address for PR: Linda Brand 6519 Governor Printz Boulevard, C-554522 Wilmington, DE 19809 USA #skincare #makeup #lindabrandbeauty

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