Alloy M4 vs Musely: The Best Estriol Body Cream for Menopause
6 minute read
Summary
Skin changes during menopause are often described as dryness, but they can also involve changes in the deeper structure of the skin.
Estrogen is a vital part of maintaining collagen levels which support skin thickness, elasticity, and resilience. As estrogen levels decline, collagen decreases, leading to thinner, less elastic skin over time. While facial skin changes often receive the most attention, many women also notice changes across the body, including the chest, arms, hands, stomach, legs, and above the knees. This can show up as crepey texture, loose skin, or a crinkly appearance, even with regular moisturizing and care.
Many body care products for menopausal skin focus on hydration or smoothing the surface of the skin. These products might improve how the skin feels or looks, but they may not address the deeper structural changes. This has left a gap between what the skin needs and what most available products are designed to do.
We want to introduce you to M4Ⓡ Body Treatment Rx, a different kind of skin care by Alloy, designed to target the underlying structure of menopausal skin rather than focusing on simply improving the surface appearance.
The M4ⓇFormula
M4Ⓡ Body Treatment Rx is formulated with prescription estriol, a form of estrogen used in topical skincare formulations. Estrogen plays an important role in maintaining skin thickness, elasticity, hydration, and collagen content, all of which can decline during menopause.
Topical estriol has been studied for its effects on menopausal skin and is linked to improvements in hydration, texture, firmness, and overall skin appearance over time. While some treatments focus on surface-level exfoliation or turnover, this approach is designed to support the structural quality of the skin as it changes during menopause.
Changes at this level can also translate into visible differences in how the skin looks and feels, particularly in areas affected by crepiness, thinning, and loss of elasticity.
“With estrogen decline contributing to thinner, drier, more fragile skin during menopause, we are incredibly excited to expand our M4 line beyond the face with the launch of M4 Body Cream, a first- of-it’s-kind estriol-based body cream designed to boost collagen, support hydration, improve skin texture and elasticity, and help address some of the most common skin concerns women experience in midlife.” - Dr. Amy Hayes
Clinical Results
To better understand how estrogen-based topical treatments affect skin during menopause, Alloy sponsored a 12-week clinical study evaluating M4Ⓡ Body Treatment Rx in menopausal women. In this controlled setting, changes in skin appearance were assessed using instrumental measurements, expert evaluation, and participant feedback.
Improvements in hydration were observed early in treatment, including a 17.7% increase in surface hydration immediately after first use. At week 12, 97% of women reported that chest skin felt more hydrated, and 87% reported improvement in deep hydration. Additionally, 95% of women reported smoother feeling skin in participant assessments.
Changes in elasticity and firmness were also observed. Elasticity improved by 6.95% at week 8 and 4.54% at week 12. In self-assessments, women reported statistically significant improvement in skin elasticity above the knee at weeks 8 and 12 and 74% of women reported improved elasticity on the chest and knees at week 12.
Improvements in crepey skin and overall appearance were also noted. In the study, 79% of women reported improvement in crepiness, while 76% said treated areas looked more youthful after 12 weeks. Improvements in pigmentation and skin brightness were also observed at weeks 8 and 12.
Importantly, no irritation was observed during the study period, and blood testing showed no meaningful increase in circulating estrogen levels, suggesting the effects remained localized to the skin. Together, these findings suggest that estrogen-based topical approaches, like M4Ⓡ Body Treatment Rx, may influence both the function and appearance of skin over time.
How M4Ⓡ Body Treatment Rx Compares
The comparison table above highlights some of the key differences between M4Ⓡ Body Treatment Rx and another prescription body cream marketed for aging skin . Although both products are intended to improve the appearance of age related skin changes , they use different formulation strategies and are designed with different treatment goals in mind.
As shown in the comparison above, M4Ⓡ Body Treatment Rx combines 0.2% prescription estriol with peptides in a formulation developed specifically for women in midlife to address skin changes associated with estrogen loss . By comparison, the other product combines tretinoin, glycolic acid, and hyaluronic acid in a formulation designed to treat acne, melasma, dark spots, and other visible signs of skin aging rather than the structural skin changes associated with menopause.
M4Ⓡ Body Treatment Rx were triple validated in a 12-week clinical study using multiple methods, including instrumental measurements, expert assessment, and participant feedback.As shown in the comparison table, no published clinical study of the finished comparison product is currently available.
M4 Body Treatment Rx
Estriol + Peptides
$65.00
The comparison also highlights differences in physician access, monthly cost, and overall treatment experience. For example, M4® Body Treatment Rx is available with ongoing access to menopause-specialized, board-certified physicians through secure messaging with no charge for the initial consultation. The comparison product includes a paid initial consultation followed by physician access for 60 days, with additional costs for continued care. These practical considerations may not directly affect how a product works, but they can influence convenience, ongoing communication, and long-term support.
Practical Use: Luxury Meets Medicine
Consistent use over time is an important factor when considering gradual changes in the skin. M4Ⓡ Body Treatment Rx is formulated specifically for menopausal skin and designed to fit into a daily skincare routine. The lightweight prescription formulation absorbs quickly and is intended for use on targeted areas where aging skin is a concern, including the chest, arms, hands, stomach, legs, and above the knees.
Unlike traditional body creams, the texture is designed to apply similarly to a facial serum, allowing for easy daily use while offering an experience that feels like high-end skin care.
Alloy’s M4Ⓡ Body Treatment Rx is designed with access in mind and begins with a no-cost consultation, offering evaluation with a menopause specialized physician without an upfront fee.
Setting Expectations
Changes in skin structure tend to occur gradually, especially when they involve collagen and the deeper layers of the skin.
In the early weeks of use, improvements are often related to hydration, which can affect how the skin looks and feels. By around 4 weeks, some women may notice changes in smoothness and overall skin feel. By approximately 8 weeks, improvements in texture and visible skin quality may become more noticeable. By 12 weeks, more established changes in overall skin appearance may be observed, reflecting the time required for structural processes in the skin.
This type of progression differs from treatments that produce faster, surface-level changes. Setting expectations and understanding how the skin responds biologically can be helpful when starting this product as it may take time to see results. However, with consistent use, Alloy’s M4 treatment may help produce a noticeable improvement in skin appearance.
Frequently Asked Questions
How does the M4Ⓡ Body Treatment Rx address menopausal skin changes?
The M4Ⓡ Body Treatment Rx is formulated with prescription estriol, a form of estrogen that specifically targets the decline in skin thickness, elasticity, and hydration that occurs during menopause. Unlike traditional lotions that only provide surface-level exfoliation, this treatment supports the structural quality of the skin. By addressing the root cause of hormonal skin aging, it helps improve the appearance of thinning, crepiness, and loss of firmness in targeted areas like the chest, arms, and knees.
What were the key findings of the 12-week clinical study on M4Ⓡ Body Treatment?
A controlled clinical study of menopausal women showed significant improvements in both the function and appearance of the skin. Immediate surface hydration increased by 17.7% after the first use, and by week 12, 97% of participants reported better hydration on the chest. Additionally, 79% of women saw improvements in crepey skin, while 74% reported better elasticity on the chest and knees. Crucially, blood testing confirmed that the treatment did not meaningfully increase circulating estrogen levels, indicating the effects remain localized to the skin without causing irritation.
What should I expect when starting a prescription estriol body treatment?
Because this treatment works on the deeper structural layers of the skin, results occur gradually and require consistency. In the first few weeks, you will likely notice improved hydration and smoothness. By week 8, more significant changes in texture and skin quality typically emerge. By the 12-week mark, established improvements in overall skin appearance and youthful look become visible,
References
Draelos ZD. A clinical study to assess the facial anti-aging efficacy of topical estriol and estradiol. Dermatology Consulting Services, PLLC; June 30, 2024.
Alloy Health. 2026 Study to Evaluate the Efficacy of Estriol Body Cream. March 2026
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