Deep Structural Support is Metabolic Skincare's flagship supplement, formulated to address skin aging at the dermal level where collagen, elastin, and hyaluronic acid are produced and maintained. Rather than targeting the skin's surface, it provides the specific building blocks and biological signals that dermal fibroblasts need to maintain structural protein output. This article breaks down exactly what's in the formulation, why each ingredient was chosen, what the clinical evidence shows for each component, and what realistic results look like over time.
The Formulation Logic: Why These Ingredients
Your skin's structural integrity depends on three interconnected components: collagen fibers (which provide tensile strength and firmness), elastin networks (which provide snap-back resilience), and hyaluronic acid (which provides the hydrated matrix that keeps everything functioning). As you age, all three decline, and they decline together because the cells that produce them, dermal fibroblasts, become progressively less active.
Deep Structural Support was designed around a specific principle: target the fibroblasts' metabolic processes directly by supplying both raw materials and signaling molecules through oral delivery. The formulation pairs hydrolyzed collagen peptides (addressing the structural protein side) with oral hyaluronic acid (addressing the hydration matrix side), because clinical evidence supports both ingredients individually, and the biological rationale for combining them is strong. Each ingredient reaches the dermis through a different metabolic pathway, and together they support complementary aspects of skin structure.
Hydrolyzed Collagen Peptides: The Evidence
Hydrolyzed collagen peptides are collagen proteins enzymatically broken down into small fragments (typically 2,000 to 5,000 daltons) optimized for intestinal absorption. Once absorbed, these peptides enter the bloodstream, accumulate in the dermis, and serve a dual metabolic function: providing amino acid building blocks for new collagen synthesis and acting as signaling molecules that stimulate fibroblasts to increase their structural output.
The clinical evidence for this mechanism is extensive. A 2014 double-blind trial by Proksch and colleagues tested 2.5 grams of bioactive collagen peptides daily in 114 women aged 45 to 65. After 8 weeks, the supplement group showed a 20% reduction in eye wrinkle volume compared to placebo. Skin biopsies from a subgroup revealed a 65% increase in procollagen type I and an 18% increase in elastin. These structural improvements persisted during a 4-week follow-up period after supplementation stopped.[1]
A 2015 study by Asserin and colleagues measured collagen density directly using high-resolution ultrasound and collagen fragmentation using reflectance confocal microscopy. After just 4 weeks of oral collagen peptide supplementation, collagen density in the dermis significantly increased and collagen fragmentation significantly decreased. Both effects persisted through 12 weeks. Skin hydration also improved significantly by week 8.[2]
A 2019 randomized, placebo-controlled trial by Bolke and colleagues tested 2.5 grams of collagen peptides daily in 72 women aged 35 and older. After 12 weeks, the supplement group showed statistically significant improvements in skin hydration, elasticity, roughness, and density compared to placebo. These improvements were substantially retained during a 4-week follow-up after the supplement was discontinued.[3]
Two meta-analyses confirm the pattern across dozens of trials. A 2023 analysis of 26 RCTs with 1,721 participants and a 2021 analysis of 19 RCTs with 1,125 participants both found that hydrolyzed collagen supplementation significantly improved skin hydration, elasticity, and wrinkle reduction.[4][5]
Oral Hyaluronic Acid: The Evidence
Hyaluronic acid is the primary hydration molecule in the dermal extracellular matrix, capable of binding up to 6 liters of water per gram. It's the "filling" between the collagen and elastin fibers, and without adequate HA, even an intact collagen network loses its resilience and volume. Your body's HA production declines with age, contributing directly to the loss of skin plumpness, elasticity, and moisture retention.
When taken orally, hyaluronic acid is partially broken down during digestion into smaller fragments that are absorbed through the intestinal wall and distributed to tissues including the skin. Rather than acting as a direct HA replacement, these fragments stimulate dermal fibroblasts to increase their own hyaluronic acid production, supporting hydration at the structural level.
A 2025 randomized, double-blind, placebo-controlled trial, one of the largest to date, enrolled 150 healthy adults and tested sodium hyaluronate at 60 mg/day and 120 mg/day for 12 weeks. The higher dose group showed significant improvements in skin hydration, elasticity, transepidermal water loss, wrinkle depth, epidermal thickness, and dermal density compared to placebo.[6]
A 2021 trial produced rapid results: 200 mg/day of a full-spectrum hyaluronan for just 28 days increased skin hydration by 10.6%, decreased wrinkle depth by 18.8%, decreased wrinkle volume by 17.6%, and improved elasticity and firmness by 5.1%.[7]
Why the Combination Matters
Collagen and hyaluronic acid serve different structural roles in the dermis, and supporting only one while ignoring the other leaves half the equation unaddressed.
Think of it this way: collagen fibers are the springs in a mattress, providing structure and support. Hyaluronic acid is the foam filling between the springs, providing cushioning, hydration, and resilience. A mattress with great springs but no foam is rigid and uncomfortable. Foam without springs collapses under weight. The structure works because both components are present and functional.
In the skin, this interdependence is equally real. Collagen fibers need a hydrated matrix to maintain their flexibility and function. Dehydrated collagen becomes brittle and more susceptible to fragmentation. Hyaluronic acid needs an intact collagen scaffold to maintain its position in the tissue. Without structural support, the hydration matrix has nothing to adhere to.
By combining hydrolyzed collagen peptides with oral hyaluronic acid, Deep Structural Support addresses both sides of this equation simultaneously: rebuilding the structural scaffold and replenishing the hydration environment that scaffold needs to function.
How to Use Deep Structural Support
The clinical trials that established efficacy for the core ingredients used consistent daily supplementation over defined time periods. Based on this research, here's what the evidence suggests for getting the most from the formulation.
Consistency is the primary factor. Every positive trial required daily intake over weeks. The structural improvements documented in biopsies and imaging reflect cumulative metabolic support, not acute effects. Taking the supplement most days and skipping occasionally will likely produce slower or reduced results compared to daily use.
Timing is flexible. The clinical trials did not establish a meaningful difference between morning and evening dosing for skin outcomes. Take it when you're most likely to remember and be consistent. Some people prefer morning with breakfast; others prefer evening. Neither timing appears to be superior based on available data.
Pair with vitamin C. Vitamin C is a required cofactor for the enzymes (prolyl hydroxylase and lysyl hydroxylase) that stabilize new collagen fibers. Without adequate vitamin C, the collagen peptides you're providing cannot be fully utilized. Most adults get sufficient vitamin C from a varied diet, but ensuring you're meeting at least the daily recommended intake (75 to 90 mg) optimizes the collagen synthesis pathway.
Maintain your topical routine. Deep Structural Support works from the inside on the structural dermis. Topical products (especially sunscreen, retinoids, and antioxidants) work from the outside on the epidermis and upper dermis. These are complementary approaches, not competing ones. Continuing sun protection is particularly important because UV radiation actively breaks down the collagen and elastin that supplementation helps rebuild.
What to Expect and When
Based on the clinical trial timelines, here's a realistic trajectory.
During the first 4 weeks, the metabolic changes are underway but mostly below the threshold of visible detection. Some trials show instrument-detectable improvements in hydration and collagen density as early as 4 weeks.[2] One HA trial documented measurable improvements in wrinkle depth and hydration within 28 days.[7] You may notice subtle improvements in skin texture and hydration during this period.
At 8 weeks, multiple trials document significant, measurable improvements. The Proksch trial recorded a 20% reduction in eye wrinkle volume at this mark.[1] This is typically when changes become noticeable in the mirror: skin looks firmer, feels more hydrated, and fine lines appear softer.
At 12 weeks, the full scope of structural benefits typically materializes. The meta-analyses conclude that 90 days of consistent supplementation produces reliable improvements across skin hydration, elasticity, and wrinkle reduction.[5] The Bolke trial documented significant improvements in hydration, elasticity, roughness, and density at this point.[3]
After 12 weeks, continued supplementation maintains the structural support. Several trials have shown that improvements partially persist for 2 to 4 weeks after stopping supplementation, but eventual decline is expected if the metabolic support is removed. For more on the science behind this approach, explore the clinical research overview.
Frequently Asked Questions
What is Deep Structural Support?
Deep Structural Support is a daily oral supplement by Metabolic Skincare that combines hydrolyzed collagen peptides with oral hyaluronic acid. It's designed to support the dermal fibroblasts that produce collagen, elastin, and hyaluronic acid in the skin's structural layer. The formulation targets skin aging at the metabolic level rather than only at the surface.
How long does Deep Structural Support take to work?
Based on clinical trials of its core ingredients, instrument-detectable improvements in collagen density and hydration can appear within 4 weeks. Visible improvements typically become noticeable at 8 weeks, with full results at 12 weeks. A 2021 meta-analysis of 19 trials confirmed that 90 days of consistent supplementation produces reliable improvements in skin elasticity, hydration, and wrinkle reduction.
Can I take Deep Structural Support with my existing skincare routine?
Yes, and that's the recommended approach. Deep Structural Support works on the deeper dermis from within, while topical products (sunscreen, retinoids, vitamin C serums) work on the epidermis and upper dermis from outside. These approaches are complementary, targeting different layers and mechanisms of skin aging simultaneously.
What happens if I stop taking Deep Structural Support?
Clinical trials show that structural improvements partially persist for 2 to 4 weeks after discontinuation. Over time, without continued metabolic support, collagen and HA production revert to their natural age-related decline. Consistent daily supplementation maintains the ongoing structural support that produces and sustains the measured benefits.
References
- Proksch E, Schunck M, Zague V, et al. Oral intake of specific bioactive collagen peptides reduces skin wrinkles and increases dermal matrix synthesis. Skin Pharmacol Physiol. 2014;27(3):113-119. doi:10.1159/000355523
- Asserin J, Lati E, Shioya T, Prawitt J. The effect of oral collagen peptide supplementation on skin moisture and the dermal collagen network: evidence from an ex vivo model and randomized, placebo-controlled clinical trials. J Cosmet Dermatol. 2015;14(4):291-301. doi:10.1111/jocd.12174
- Bolke L, Schlippe G, Gerss J, Voss W. A collagen supplement improves skin hydration, elasticity, roughness, and density: results of a randomized, placebo-controlled, blind study. Nutrients. 2019;11(10):2494. doi:10.3390/nu11102494
- Pu SY, Huang YL, Pu CM, et al. Effects of oral collagen for skin anti-aging: a systematic review and meta-analysis. Nutrients. 2023;15(9):2080. doi:10.3390/nu15092080
- de Miranda RB, Weimer P, Rossi RC. Effects of hydrolyzed collagen supplementation on skin aging: a systematic review and meta-analysis. Int J Dermatol. 2021;60(12):1449-1461. doi:10.1111/ijd.15518
- Doleckova I, Kusnierik P, Berka V, et al. Oral sodium hyaluronate improves skin hydration, barrier function and signs of aging: a randomized, double-blind, placebo-controlled trial in 150 healthy adults. Sci Rep. 2025;16(1):2941. doi:10.1038/s41598-025-32758-5
- Michelotti A, Cestone E, De Ponti I, et al. Oral intake of a new full-spectrum hyaluronan improves skin profilometry and ageing: a randomized, double-blind, placebo-controlled clinical trial. Eur J Dermatol. 2021;31(6):798-805. doi:10.1684/ejd.2021.4176
