• FitRenew supplement bottle, front label.
  • Fitties FitRenew supplement bottle with supplement facts on a white background
  • Fitties FitRenew supplement bottle with directions on a white background
  • Closeup of Fitties FitRenew bottle and capsules in hands
  • Closeup of bottle of Fitties FitRenew in a field
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FitRenew | Ultra-Premium Collagen Generator with ch-OSA® & Biotin

Collagen powders give you collagen to swallow. FitRenew helps your body make its own.

$54.00
30 day supply $1.80 per day
*
    • ch-OSA helps your body build its own collagen, instead of just swallowing more
    • In trials, ch-OSA improved skin roughness in women with sun-damaged skin1 and made hair thicker in women with fine hair2
    • Biotin for an extra layer of hair, skin, and nail support
    • Collagen runs deeper than skin: supports your bones, joints, and connective tissue too

FitRenew is a collagen generator that helps your body make its own collagen, using clinically tested ch-OSA and biotin.

Subscriptions renew automatically at the frequency and price you select until you cancel. Change, skip, or cancel anytime from your account.
FitRenew supplement bottle, front label.
Fitties FitRenew supplement bottle with supplement facts on a white background
Fitties FitRenew supplement bottle with directions on a white background
Closeup of Fitties FitRenew bottle and capsules in hands
Closeup of bottle of Fitties FitRenew in a field

  • Molecular cycle icon indicating a collagen-related feature

    Collagen You Build, Not Buy

    Plenty of collagen supplements hand you collagen to swallow. ch-OSA helps activate the enzymes your collagen-generating cells use to build your own.

  • Hair follicle icon indicating a hair-related feature

    Clinically Tested, Not Wishful

    FitRenew’s clinically tested ch-OSA helps reduce fine lines and wrinkles and strengthen hair and nails.

  • Skin layer icon indicating a skin-related feature

    5,000mcg of Biotin

    5,000mcg of biotin per capsule, for beauty support alongside ch-OSA. A real amount, not a sprinkle.

  • Joint and bone icon indicating a bone and joint-related feature

    Your Face Isn’t the Only Thing Made of This

    Skin gets the attention, but collagen also builds your bones, joints, and connective tissue. FitRenew supports the whole structure, not just the surface.
Closeup of Fitties FitRenew bottle and capsules in hands

The Problem With Drinkable Collagen

Collagen powders sell a shortcut, collagen to swallow. ch-OSA takes a different route. It’s a bioavailable form of silicon that helps activate the enzymes your collagen-generating cells use to make collagen, and in trials it improved skin roughness in women with sun-damaged skin (Barel et al., 2005) and made hair thicker in women with fine hair (Wickett et al., 2007). The result is support for the collagen your skin, hair, and nails are made of, built from the inside instead of poured in from the top.

Who FitRenew Is For

Built for people who want their skin, hair, and nails supported from the inside out.

  • Who It’s For

    • Anyone serious about skin, hair, and nails who wants to support their body’s own collagen production
    • People who want beauty support that goes deeper, into bones, joints, and connective tissue

  • Who It’s Not For

    • Anyone expecting overnight results. ch-OSA’s trials ran for 20 weeks and 9 months (Barel et al., 2005; Wickett et al., 2007)
    • People who specifically want ingestible collagen peptides, not a collagen generator

What’s Inside

Two ingredients, both there to do a job. No filler list pretending to be a formula.

ch-OSA

Choline-stabilized orthosilicic acid is the clinically tested, highly absorbable form of silicon that helps activate the enzymes your cells use to build collagen. The whole reason FitRenew works.

Biotin

5,000mcg of biotin per capsule, included for beauty support alongside ch-OSA, not the trace amount hiding in your multivitamin.

Formulated to exclude: wheat, gluten, corn, yeast, soy, animal and dairy products, fish, shellfish, peanuts, tree nuts, egg, ingredients derived from genetically modified organisms (GMOs), artificial colors, artificial sweeteners, and artificial preservatives.

Other ingredients include: capsule (hypromellose and water), microcrystalline cellulose, and purified water.

What to Expect From FitRenew

Beauty proteins are built, not rushed. Here’s the honest timeline, grounded in the research.

  • Clock icon for the first phase

    From Day 1

    One capsule twice a day. ch-OSA is absorbed and starts feeding the cells that make your collagen. Nothing to see yet, this is the groundwork.

  • Calendar icon for the second phase

    Months 2-9

    This is the window of ch-OSA’s trials, which found smoother skin at 20 weeks in women with sun-damaged skin (Barel et al., 2005) and thicker, stronger hair at 9 months in women with fine hair (Wickett et al., 2007). Consistency is the whole game.

  • Layered blocks icon for the third phase

    Ongoing

    Skin collagen declines with age (Calleja-Agius et al., 2007), so ongoing support is the point, for your skin, hair, nails, and the structure underneath.
Athlete holding bottle of Fitties FitRenew outdoors

How to Use FitRenew

  • Take 1 capsule
  • Twice daily, with or without food

Every day. Collagen support only works if you actually keep at it. Whenever you’ll remember it, morning and night is easiest.

Pro Tip. Pair it with a protein habit. Collagen is built from amino acids, so the raw materials matter.

How FitRenew Compares

Plenty of collagen supplements sell you collagen to swallow. FitRenew helps you make your own. That difference is the whole pitch.

Clinically studied ch-OSA
Formulated for skin, hair, and nails
Biotin included
Vegetarian, no dairy, soy, gluten, or egg
FitRenew supplement bottle, front label.

FitRenew

FitRenew

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FitRenew

Typical Collagen Supplements

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Where FitRenew Fits Your Stack

FitRenew supports the collagen. Pair it with the raw materials and the foundation to back it up.

  • FitWhey+: protein gives your body the amino acids collagen is built from.
  • FitNutrients+: the daily vitamin and mineral foundation underneath it all.
  • FitProtect: cellular antioxidant support to round out the routine.
Find Your Stack

Frequently Asked Questions

What is ch-OSA and how does FitRenew work?

ch-OSA is choline-stabilized orthosilicic acid, a highly absorbable form of silicon. It helps activate the enzymes your cells use to produce your body’s own collagen, a protein behind healthy skin, hair, and nails.

How is FitRenew different from collagen powders and peptides?

Collagen powders give you collagen to digest. FitRenew instead supports your body’s own collagen production, so you’re building it rather than just consuming it.

Is FitRenew clinically studied?

Yes. In a 20-week trial in 50 women with sun-damaged skin Barel et al., 2005, ch-OSA improved skin roughness compared with placebo, and participants rated their hair and nails as less brittle. In a 9-month trial in 48 women with fine hair Wickett et al., 2007, it resulted in thicker hair. FitRenew provides 10mg of silicon as ch-OSA per day, the dose used in both studies.

How long until I notice results from FitRenew?

Beauty proteins build slowly. In the trials, skin improved at 20 weeks in women with sun-damaged skin (Barel et al., 2005) and hair at 9 months in women with fine hair (Wickett et al., 2007), so give it at least a few months of consistent daily use.

What is the biotin in FitRenew for?

Biotin is included for beauty support alongside ch-OSA; FitRenew provides 5,000mcg per capsule. Very high biotin intakes can interfere with some lab tests, including thyroid tests, so tell your healthcare provider you take it before blood work (NIH Office of Dietary Supplements).

Does FitRenew support more than skin?

Collagen is also a major component of your bones (Viguet-Carrin et al., 2006), joints, and connective tissue. Alongside its beauty support, FitRenew helps support healthy bone mineral density and connective tissue.

Is FitRenew vegetarian, and what does it exclude?

Yes. FitRenew uses vegetarian capsules and is formulated to exclude wheat, gluten, corn, yeast, soy, animal and dairy products, fish, shellfish, peanuts, tree nuts, egg, GMOs, artificial colors, artificial sweeteners, and artificial preservatives.

How do I take FitRenew?

Take one capsule twice daily, with or without food. If you take medication or have a health condition, check with your healthcare provider first.

Can I stack Fitties products together?

Many Fitties products are designed to work together. Check each label so you don't double up on the same ingredient, such as caffeine or magnesium, and talk to your healthcare professional if you take medication. The Stack Builder can suggest a combination for your goals.

How are Fitties products made?

Every Fitties formula is manufactured in a GMP compliant facility. No low-grade shortcuts. Just ultra-premium ingredients, every one listed on the label.

What are the dietary and allergen details for each product?

Each product is different, and each product page lists what that formula is formulated to exclude, word for word from its label. No Fitties formula uses artificial colors. If something doesn't fit your dietary needs, you'll know upfront.

Sources

  1. Barel et al., 2005pubmed.ncbi.nlm.nih.gov/16205932↑
  2. Wickett et al., 2007pubmed.ncbi.nlm.nih.gov/17960402↑

* These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.