Three ingredients, one skin-focused formula.
Estriol 0.3%, vitamin C 5% and hydrolyzed hyaluronic acid 0.5%. Explore the estrogen, antioxidant and moisture-binding components of this topical blend.
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Meet the formula
Dryness, a change in skin texture and the appearance of fine lines can arrive together, but they describe different aspects of skin. This topical blend combines three ingredients from three families: estriol, an estrogen; vitamin C, an antioxidant ingredient; and hydrolyzed hyaluronic acid, a humectant. Reading those roles separately makes the formula easier to understand than calling it simply a hydrating cream. Its identity is the combination and the listed strengths, brought together in one topical product.
Estrogen ingredient with topical skin research
Antioxidant ingredient and collagen-biology research
Humectant that attracts and holds water
Inside the formula
0.3%
Estriol is an estrogen, a hormone-family ingredient that distinguishes this formula from a conventional moisturizing serum. Researchers have studied topical estrogens in aging skin, examining measures such as moisture, elasticity and wrinkle appearance. Estriol supplies that ingredient family within the blend; it is separate from the humectant role of hyaluronic acid and the antioxidant role of vitamin C.
5%
Vitamin C is an antioxidant and is involved in collagen biosynthesis. Topical vitamin C has also been studied in photoaged skin. Its presence gives this formula a different ingredient profile from an estriol-only product. The concentration describes the listed vitamin C component; the complete product remains a three-ingredient topical blend.
0.5%
Hyaluronic acid is a humectant, an ingredient that attracts and holds water. Hydrolyzed describes a processed form of the molecule. This is the moisture-focused ingredient in the listing. That role helps explain why the feel of hydration is a separate part of the formula story from estrogen signaling or the biology studied with topical vitamin C.
A closer look / 01
Moisture concerns how hydrated skin feels and behaves. Texture concerns the feel and visible surface of the skin. Tone concerns color and pigmentation. Keeping those three goals separate is useful when comparing this blend with a simple hyaluronic-acid serum, a retinoid cream or a pigment-focused formula. The products may share a skincare shelf while offering different active ingredients.
This blend’s distinguishing feature is the estriol component alongside vitamin C and hyaluronic acid. A hydrating serum may share a humectant but lacks that same full ingredient map. A tretinoin blend introduces a retinoid, which belongs to another pharmacologic family. Compare the complete active list to understand what changes from one option to the next.
A closer look / 02
The listing contains estriol 0.3%, vitamin C 5% and hydrolyzed hyaluronic acid 0.5%. Each figure belongs to its own ingredient. Adding them together would hide the information that makes the blend distinctive. Similarly, a vitamin C serum with a different percentage is a separate formulation, rather than a direct measure of the strength of this complete product.
A closer look / 03
The linked topical-estrogen study examined aging-skin measures using estrogen formulations. The linked vitamin C trial evaluated a vitamin C cream against its vehicle on photoaged skin. Those are useful examples of how researchers separate ingredient effects from a cream’s base and choose specific skin measurements. They offer context for the ingredient families, while this listing identifies a combined estriol, vitamin C and hyaluronic-acid product.
Make an informed comparison
The comparison starts with what you want to understand about your skin. Moisture binding, estrogen ingredients and retinoid signaling are distinct roles. This formula brings an estrogen ingredient and vitamin C together with a humectant in one topical blend.
| Option | Ingredient identity | What distinguishes it |
|---|---|---|
| This blend | Estriol / vitamin C / hydrolyzed hyaluronic acid | Estrogen, antioxidant and hydration components |
| Hyaluronic-acid serum | Hyaluronic acid | Primarily moisture binding |
| Tretinoin / Niacinamide / Vitamin C | Tretinoin / niacinamide / vitamin C | Retinoid-centered topical blend |
The useful details
Estriol is an estrogen; tretinoin is a retinoid. They belong to different ingredient families and have different research histories. Vitamin C can appear alongside either in a formula, which makes checking the full active list more informative than recognizing one shared ingredient.
Separate dryness, texture and the appearance of fine lines. Note how the cream feels in your existing routine and use comparable lighting for photos. That produces a more useful record than one overall skin score, because moisture and visible surface changes describe different observations.
Explore the ingredient research
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A topical estrogen ingredient, distinct from the oral and patch hormone options.
A skin-focused ingredient studied in topical photoaging formulations.
A moisture-focused ingredient included alongside estriol and vitamin C.
One blended topical formula instead of three separate products.
This topical formula pairs estriol with vitamin C and hydrolyzed hyaluronic acid. Estriol is an estrogen ingredient studied in aging skin; vitamin C has its own topical skin research, while hyaluronic acid brings a moisture-focused component. The three ingredients come together in one formulation.
Estriol
The estrogen component has been studied in topical aging-skin care.
Vitamin C
The formula includes vitamin C alongside the estriol component.
Hyaluronic acid
The third ingredient adds a moisture-focused component.
The references below study topical estrogen and vitamin C formulations separately. The estrogen study compared estriol 0.3% with estradiol 0.01%; the vitamin C study evaluated a separate cream.
59 participants
The topical-estrogen study compared two estrogen formulations over six months.
Schmidt et al., 1996
6 months
A separate randomized vitamin C cream study assessed photoaged skin over six months.
Humbert et al., 2003
Compare the ingredients and format before choosing your plan.
| Estriol + Vitamin C + Hyaluronic Acid | Tretinoin + Niacinamide | |
|---|---|---|
| Formula | Estriol / vitamin C / hyaluronic acid | Tretinoin / niacinamide / hyaluronic acid |
| Format | Topical cream | Topical cream |
| Ordering | Online plan selection | Online plan selection |
The steps from choosing your plan to continuing your routine.
Getting started
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After checkout
Use the instructions provided with your prescribed formulation.
Along the way
Contact the existing care team with questions about your treatment or order.
HealthRX.com verified facts
Estriol / Vitamin C / Hyaluronic Acid starts at $158 per month on monthly plan; the lowest checkout charge is $158 (billed monthly). A prescription is never guaranteed. A licensed provider reviews each request before a pharmacy can dispense treatment.
Catalog verified October 3, 2026. Source: HealthRX.com checkout catalog and refund policy. Monthly equivalent divides the discounted plan charge by the number of months; checkout may collect a multi-month total.
An independent US-licensed clinician reviews every request. If they decide the treatment is not right for you, you get a full refund for the medication.
Prescriptions are filled by a US-licensed pharmacy and shipped free, in discreet packaging, on every plan.
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Compounded medications are prepared by a US-licensed pharmacy and are not reviewed by the FDA for safety or effectiveness. Products are dispensed only after a licensed provider determines they are appropriate. Information here is educational and is not a substitute for medical advice.
