Total Curve Review 2026 — Volufiline Dual System Assessed

Introduction: What You Need to Know

Total Curve is sold as a "daily breast enhancement therapy": a herbal supplement (fennel, dong quai, black cohosh, hops, wild yam and others) plus a lifting and firming gel. Volufiline is in the gel only, not the pill. The sales page describes a Volufiline study in 32 women who applied it to one breast for 56 days, but it doesn't say who ran it, how tissue was measured or whether there was a control group, and we found no peer-reviewed publication. No amounts are given for any ingredient. This review sets Total Curve alongside the other women's products we've reviewed, which are mostly aimed at different goals.

For each product we check the current formula and disclosed doses, whether the product itself has been tested in a published trial, what the ingredient research shows, the guarantee terms and the main safety cautions. We earn affiliate commissions on purchases made through our links, as disclosed above.

Total Curve at a Glance

A breast-enhancement system from Leading Edge Health: a daily phytoestrogen herb supplement plus a topical gel with the cosmetic ingredient Volufiline. No published trial of the product; amounts not disclosed. Total Curve is for women curious about a non-surgical breast enhancement product who accept that the evidence is thin and are ready to use the refund policy. The 'up to 8.4%' claim comes from an unpublished study of the gel ingredient, not of Total Curve, and the pill's hormone-active herbs aren't suitable for everyone.

How to Evaluate Products in This Category

Before looking at individual products, these are the checks that matter most:

• Dose alignment with published research: An ingredient at a fraction of the studied dose is unlikely to match the research. Check whether the label discloses each dose and compare it with the amounts used in human studies.
• Published human evidence: Look for a published, placebo-controlled trial of the product itself. Most products in this category have none and rely on ingredient studies, animal data or traditional use.
• Branded ingredients: Branded extracts (such as KSM-66, Sensoril, Cognizin, Furosap or SYN-COLL) are standardized, and some have their own studies, often funded by the supplier. A brand name alone doesn't mean the product uses a studied dose.
• Manufacturing and testing: Supplements sold in the US must be made under the FDA's current good manufacturing practice (cGMP) rules. An independent certificate of analysis is a useful extra check on purity and dose.
• Refund terms: Read the conditions, not just the number of days. Many guarantees require containers to reach the warehouse within the window and don't refund shipping.

Product Rankings

Ranked by our overall assessment, which weighs ingredients and doses, published evidence, transparency and guarantee terms, safety and value:

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#1 — Kollagen Intensiv — Detailed Analysis

Top pick: anti-aging face creams | 67-Day Money-Back Guarantee (seller's terms apply)

Topical anti-aging face cream built around the SYN-COLL peptide, with retinol, other peptides and hyaluronic acid. Ingredient percentages are not disclosed.

Kollagen Intensiv may suit someone who wants a peptide-plus-retinol face cream in one product and is willing to give it two to three months. The headline SYN-COLL claims rest on unpublished supplier and brand studies, so the retinol is the part with the best independent evidence, and its concentration isn't disclosed.

What We Found

• Formula: A topical face cream, not an oral supplement: the SYN-COLL peptide, retinol, other peptides, hyaluronic acid and vitamins C and E. No percentages are given.
• Evidence: No trial of the finished cream has been published. SYN-COLL's wrinkle data come from the supplier and the brand and aren't peer reviewed. Retinol is the better-supported ingredient, but its concentration isn't disclosed.
• Guarantee: 67 days; unused product returned in its original container; shipping is not refunded (official product page).
• Cautions: Retinol can cause dryness and redness at first and increases sun sensitivity. Ask a doctor before using retinol if you're pregnant, trying to conceive or breastfeeding.

Read our full Kollagen Intensiv review →

#2 — HerSolution — Detailed Analysis

Top pick: women's libido supplements | 67-Day Money-Back Guarantee (seller's terms apply)

A once-daily herbal pill from Leading Edge Health with niacin, hops, Mucuna, ginkgo, epimedium and cayenne, marketed for women's libido. No published trial of the product; ingredient amounts aren't disclosed.

HerSolution may suit a healthy woman on no regular medication who wants to try a herbal option and is prepared to use the refund policy if it doesn't help. The main caveat is that there's no clinical trial of the formula, doses aren't disclosed, and several ingredients (levodopa, plant estrogens, ginkgo) carry real cautions.

What We Found

• Formula: One pill a day with six listed ingredients: niacin, hops, Mucuna pruriens (25% L-DOPA), ginkgo, epimedium and cayenne. No amounts are shown on the official pages.
• Evidence: No published trial of HerSolution. Its herbs have essentially no trials in women for desire or arousal, and ginkgo hasn't reliably beaten placebo.
• Guarantee: 67 days from delivery. Try for 60 days; containers must reach the warehouse within 67 days of delivery, "no exceptions"; shipping is not refunded; one refund per customer.
• Cautions: Mucuna supplies levodopa, hops and epimedium have estrogen-like activity, and ginkgo can raise bleeding risk. Avoid it in pregnancy or with hormone-sensitive conditions.

Read our full HerSolution review →

#3 — Provestra — Detailed Analysis

Alternative pick: women's libido supplements | 67-Day Money-Back Guarantee (seller's terms apply)

A once-daily herbal and vitamin tablet from Leading Edge Health with 21 listed ingredients, including black cohosh, licorice, damiana, ginkgo and valerian, marketed for women's libido and hormonal balance. No published trial; amounts not disclosed.

Provestra may suit a healthy woman on no medication who wants a broad herbal-plus-vitamin formula and is ready to use the refund policy. There's no trial of the product, doses aren't disclosed, and black cohosh and licorice mean women with liver, heart or blood-pressure problems should avoid it or ask a doctor first.

What We Found

• Formula: One tablet a day with 21 listed herbs, vitamins and minerals, including L-arginine, black cohosh, licorice, damiana, ginkgo, valerian and kudzu. No amounts are shown.
• Evidence: No published trial of Provestra; the sales page cites a buyer survey, not a controlled study. Black cohosh, the best-studied herb here, has no evidence for libido.
• Guarantee: 67 days from delivery. Try for 60 days; containers must reach the warehouse within 67 days of delivery, "no exceptions"; shipping is not refunded; one refund per customer.
• Cautions: Black cohosh is linked to rare liver injury, licorice can raise blood pressure and valerian may add drowsiness. Avoid it in pregnancy.

Read our full Provestra review →

#4 — Total Curve — Detailed Analysis

Breast enhancement cream + capsules | 67-Day Money-Back Guarantee (seller's terms apply)

A breast-enhancement system from Leading Edge Health: a daily phytoestrogen herb supplement plus a topical gel with the cosmetic ingredient Volufiline. No published trial of the product; amounts not disclosed.

Total Curve is for women curious about a non-surgical breast enhancement product who accept that the evidence is thin and are ready to use the refund policy. The 'up to 8.4%' claim comes from an unpublished study of the gel ingredient, not of Total Curve, and the pill's hormone-active herbs aren't suitable for everyone.

What We Found

• Formula: A daily herbal pill (fennel, dong quai, black cohosh, hops, wild yam and others) plus a gel containing the cosmetic ingredient Volufiline. No amounts are given.
• Evidence: No trial of Total Curve. The "up to 8.4%" figure comes from an unpublished study of the gel ingredient, not the product, and there is no human evidence the herbs increase breast size.
• Guarantee: 67 days from delivery. Try for 60 days; containers must reach the warehouse within 67 days of delivery, "no exceptions"; shipping is not refunded; one refund per customer.
• Cautions: Several herbs have estrogen-like activity: avoid it with hormone-sensitive cancers, endometriosis or fibroids. Black cohosh is linked to rare liver injury.

Pros and Cons

• ✓ Ingredient names for both parts are published
• ✓ 67-day (from delivery) money-back guarantee; no autoship
• ✓ Non-invasive alternative for people who want to experiment before considering anything medical
• ✗ No trial of Total Curve; Volufiline data is unpublished supplier data
• ✗ 'Up to 8.4%' is a best-case figure from 32 women with no control group described
• ✗ Hormone-active herbs, black cohosh and dong quai carry real cautions
• ✗ No doses, serving size or directions on the product page

Read our full Total Curve review →

Buying Guide: What to Look For

When evaluating any product in this category, check these points before purchasing:

• Full ingredient disclosure, with no proprietary blends hiding individual doses
• Made under FDA cGMP rules, ideally with an independent certificate of analysis
• A refund window long enough for a fair trial, with conditions you've read
• Purchase from the official site if you want to be able to use the money-back guarantee
• Realistic marketing claims, with no promises to cure anything or guarantee an outcome

Safety Considerations

The products discussed in this article are sold as dietary supplements, cosmetics or consumer devices, not medicines. They are not intended to diagnose, treat, cure or prevent any disease. These statements have not been evaluated by the Food and Drug Administration (FDA).

Always consult a qualified healthcare professional before starting any supplement, particularly if you take prescription medication, have an existing medical condition, or are pregnant or breastfeeding. Individual results vary.

Final Recommendation

Total Curve is for women curious about a non-surgical breast enhancement product who accept that the evidence is thin and are ready to use the refund policy. Avoid it with hormone-sensitive cancers, endometriosis or fibroids, liver disease, blood thinners, or during pregnancy or breastfeeding. The other products in this article serve different goals: our top picks are Kollagen Intensiv among anti-aging face creams and HerSolution for women's libido. If you buy, use the official site so you can use the money-back guarantee, and read its conditions first.