Ultra Hydrating Body Cream
Dry Skin Workhorse
Verified reviewer
Pros & cons.
- +15% lactic acid provides therapeutic-grade exfoliation for severely dry and rough skin
- +Ultraplex triple-lactate formula optimizes both exfoliation and humectant properties
- +Heavy occlusive base with petrolatum seals moisture into freshly exfoliated skin
- +Fragrance-free — avoids unnecessary sensitization of already-compromised dry skin
- +Nearly four decades of dermatological credibility and clinical use behind the brand
- +Effective for both general xerosis and keratosis pilaris in a single product
- +Award-winning formula recognized by New York Magazine and Harper's Bazaar
- −Dense texture requires effort to spread and lacks the elegance of modern body creams
- −Natural ammonium lactate scent is sweet and off-putting for some despite unscented label
- −15% lactic acid stings noticeably on broken, cracked, or freshly shaved skin
- −4.9 oz tube runs out quickly if used on large body areas twice daily
- −Basic ingredient list of mineral oil and petrolatum may not appeal to clean beauty preferences
The full review.
AmLactin’s Ultra Hydrating Body Cream defies the era of curated body care. While new brands chase Instagrammable aesthetics and exotic botanicals, this cream arrives in a clinical white-and-green tube like a no-nonsense pharmacist. It has a job to do.
That job—turning severely dry, rough, scaly skin soft and smooth—is what AmLactin has done since 1987, when Upsher-Smith Laboratories moved pharmaceutical-grade ammonium lactate from prescription pads to drugstore shelves. The Ultra Hydrating formula is the brand’s higher-strength option: 15% lactic acid in a thick cream base that hydrates even the driest patches.
AmLactin’s Ultraplex technology builds the formulation using three lactic acid salts—ammonium, sodium, and potassium lactate—instead of one. Different salt forms provide different pH profiles and skin penetration, allowing for more nuanced exfoliation than a single salt. Whether this outperforms a standard ammonium lactate cream is debatable, but the concentration and clinical outcomes are well-documented.
The base formula is purely functional. Mineral oil, petrolatum, glycerin, and propylene glycol are the workhorses of dermatological moisturization, chosen for efficacy. Clinical studies show petrolatum alone reduces transepidermal water loss by up to 99%. In a formula for seriously compromised skin, this level of occlusion is a feature. Cetearyl alcohol and stearic acid give the cream its body, while polysorbate emulsifiers keep the ingredients blended.
Applying this cream is utilitarian. The texture is thick and requires effort to spread, especially over rough patches. It does not glide like a luxury body cream or absorb as fast as a body oil. You work it in, feel slight tackiness for a minute or two, and then it settles. It trades sensorial appeal for performance—rough patches soften within a few applications.
The tingling is real. Fifteen percent lactic acid on dry, potentially cracked skin will sting. The first few applications cause a noticeable sting that ranges from mild to uncomfortable if your skin is compromised. This is the acid working; it subsides as your skin adjusts during the first week. If you have open fissures or deep cracks, use caution—or start with the gentler 12% Daily Nourish formula.
Then there is the scent. AmLactin labels this unscented because no fragrances are added. However, ammonium lactate has an inherent sweet, maple syrup-like aroma. Some find it pleasant; others find it off-putting. It dissipates within minutes of application. It is a small price for a fragrance-free formula, but it surprises those expecting an odorless product.
Results build steadily. By the end of week one, chronically dry areas feel smoother. By week three or four, rough patches that resisted conventional moisturizers look different—softer, less scaly, and more like normal skin. The lactic acid dissolves dead cell buildup while glycerin and petrolatum hydrate the newly exposed layers. For those with long-term rough patches on shins, forearms, or elbows, this transformation is significant.
The cream also works for keratosis pilaris, despite AmLactin having a dedicated KP product. The high occlusive content provides the extra moisture KP-prone skin often needs, making it a good choice for both KP and generalized dryness.
Value is acceptable. At roughly $18 for 4.9 ounces, it is not cheap for a basic ingredient profile, but 15% lactic acid at pharmaceutical quality is hard to find at this price. One tube lasts 6-8 weeks with focused application on problem areas, making the per-week cost reasonable. Full-body application uses it faster; for all-over maintenance, the 12% Daily Nourish in larger sizes is more economical.
This cream earns its reputation through decades of solving problems, not through marketing or packaging. Dermatologists recommended AmLactin before social media, and they will continue to do so after current aesthetic brands fade. It is not exciting. It is effective. Sometimes, that is exactly what your skin needs.
Formula
PM routine
Ingredient analysis.
Full INCI list
Water, Ammonium Lactate, Glycerin, Propylene Glycol, Mineral Oil, Petrolatum, Cetearyl Alcohol, Stearic Acid, Polysorbate 60, Steareth-21, Steareth-2, Xanthan Gum, Sodium Benzoate, Disodium EDTA
Skin match.
The science.
The Science
Lactic acid is one of the most studied alpha hydroxy acids in dermatology. It uses a dual mechanism that works well for dry skin. As a keratolytic, it breaks desmosomal bonds between corneocytes—the protein bridges holding dead skin cells together—to speed up even desquamation. At 15% concentration, this effect dissolves the compacted dead cell layers found in xerosis and keratosis pilaris.
Lactic acid also works as a hygroscopic humectant. Its hydroxyl groups attract and bind water molecules, pulling moisture from the dermis into the epidermis. A 1996 study by Smith in the Journal of the American Academy of Dermatology showed that ammonium lactate lotions significantly increased stratum corneum hydration and reduced scaling in patients with moderate to severe xerosis after two weeks of twice-daily application.
The formula's occlusive component—primarily petrolatum—maximizes these effects. Petrolatum reduces transepidermal water loss (TEWL) by forming a hydrophobic barrier on the skin surface. A 1992 study by Ghadially et al. in the Journal of Clinical Investigation showed that petrolatum reduces TEWL and accelerates barrier recovery by providing an external lipid source for skin repair.
Combining chemical exfoliation (lactic acid), humectant hydration (lactic acid + glycerin), and occlusive sealing (petrolatum + mineral oil) manages dry skin by addressing three areas: abnormal desquamation, low water content, and excessive water loss.
References
- Epidermal Permeability Barrier in the Treatment of Keratosis Pilaris — Dermatology Research and Practice (2015)
Dermatologist Perspective
Dermatologists have used ammonium lactate formulations to treat xerosis and keratosis pilaris for over three decades. Board-certified dermatologists note that the 15% concentration is a meaningful step up from the 12% standard for patients with stubborn, clinically significant dryness that fails to respond to conventional moisturizers. Combining chemical exfoliation and occlusive moisturization in one product follows evidence-based dry skin management protocols. Dermatologists typically recommend application to damp skin twice daily. They warn that mild stinging during the adjustment period is a sign of active exfoliation, not a reason to stop use.
Where it fits in your routine.
Apply a large amount to dry, rough, or bumpy skin twice daily — morning and evening. For best results, apply within a few minutes of showering while skin is still slightly damp. Massage until absorbed. Expect mild tingling on first use that fades during the first week. Apply sunscreen over treated areas exposed to sun, as lactic acid increases photosensitivity. Do not apply to broken, deeply cracked, or freshly shaved skin until the area heals.
At roughly $18 for 4.9 ounces, the Ultra Hydrating Body Cream is reasonably priced for a pharmaceutical-grade 15% lactic acid treatment. The ingredient list is basic — mineral oil, petrolatum, and glycerin are inexpensive raw materials — but the specific concentration, pH optimization, and Ultraplex triple-salt formulation provide pharmaceutical precision that generic ammonium lactate creams often lack. The per-week cost works for targeted use on problem areas. For whole-body application, AmLactin's larger-format 12% Daily Nourish lotion offers better per-ounce value. The brand's nearly four decades of dermatological trust adds value a newer brand at the same price lacks.
Use this if you have chronically dry, rough, or scaly skin on legs, arms, and elbows that regular moisturizers do not fix. It works for people who want one product to exfoliate and deeply moisturize without a multi-step body care routine.
People with sensitive skin or active eczema flares should skip the 15% concentration and use AmLactin's gentler 12% formula. Users who want lightweight, fast-absorbing body lotions or dislike the natural ammonium lactate scent may find this cream's thick texture frustrating.
Product details.
This thick, dense cream takes effort to spread but absorbs without a greasy film. It is heavier than a typical body lotion and feels therapeutic rather than cosmetically elegant.
The formula is unscented, but the ammonium lactate has a faint natural sweetness (often described as maple syrup-like) that fades minutes after application.
Squeeze tube with flip-top cap. It is sturdy and travel-friendly, but the 4.9 oz size feels small for full-body application.
Expect mild to moderate tingling on first use, especially on very dry or cracked areas; the lactic acid causes this and it is normal. Skin feels slightly tacky for a few minutes before it fully absorbs. The first 3-5 days may increase flaking as dead skin cells shed faster. By the end of week one, skin typically feels significantly softer.
Apply twice daily to arms and legs for 6-8 weeks; use on larger body areas for less time.
12 months
fall winter
The backstory.
The Ultra Hydrating cream represents AmLactin's premium tier — a step up in concentration and occlusive power from the brand's original 12% Daily Nourish formula. Born from the same pharmaceutical lineage as prescription ammonium lactate products that dermatologists have used since the 1980s, it was developed for patients whose skin dryness goes beyond cosmetic discomfort into clinically significant xerosis.
About Amlactin
Legacy Brand (20+ years)Upsher-Smith Laboratories developed AmLactin in 1987. It is the #1 dermatologist-recommended moisturizer brand with lactic acid. Sandoz acquired the brand in 2016, and its ammonium lactate formulations have nearly four decades of clinical use.
Common myths.
Exfoliate dry skin with scrubs before applying moisturizer.
Physical scrubs worsen dryness by damaging a compromised skin barrier. This cream's 15% lactic acid chemically dissolves dead skin buildup and hydrates—no scrubbing is needed or recommended.
Mineral oil and petrolatum clog pores and are bad for skin.
Both are well-studied, non-comedogenic occlusives that dermatologists have used for decades. For body care on dry skin, they are among the most effective ingredients for preventing transepidermal water loss. The concern is cosmetic preference, not evidence-based.
FAQ.
What's the difference between Amlactin Ultra Hydrating and Amlactin Daily Nourish?
The Ultra Hydrating cream has 15% lactic acid, while the Daily Nourish formula has 12%. This makes Ultra Hydrating more potent for rough patches and stubborn dry skin. The thicker cream base uses heavier occlusives to seal in more moisture. Daily Nourish works better as an everyday whole-body lotion, but Ultra Hydrating targets problem areas.
Can I use Amlactin Ultra Hydrating Body Cream on my face?
This cream is for body use. The 15% lactic acid concentration and the heavy mineral oil and petrolatum base are too occlusive and irritating for facial skin. Use a dedicated facial AHA product with a lower concentration and lighter vehicle for facial exfoliation.
Why does Amlactin Ultra Hydrating sting when I apply it?
The 15% lactic acid is an active exfoliant. It causes mild tingling or stinging, especially on very dry, cracked, or recently shaved skin. This sensation usually stops within a few minutes and decreases as skin condition improves with use. If stinging is severe or persists, use it once daily.
How long does it take for Amlactin Ultra Hydrating to show results?
Most users see softer, smoother skin after one week of twice-daily use. The lactic acid dissolves dead skin buildup immediately, but visible changes to rough, scaly patches take 2-4 weeks of consistent application.
Is Amlactin Ultra Hydrating Body Cream good for keratosis pilaris?
Yes — AmLactin has a dedicated KP product (KP Bumps Be Gone), but the Ultra Hydrating cream's 15% lactic acid concentration also dissolves the keratin plugs that cause KP bumps. Many users prefer the Ultra Hydrating cream for KP because the thick formula adds moisture to the dry skin around KP bumps.
What the community says.
"Dramatically softens extremely dry, rough skin within days"
"Effective for keratosis pilaris as well as general dryness"
"Non-greasy formula absorbs well for a heavy-duty cream"
"Fragrance-free, suitable for sensitive noses"
"Natural lactic acid scent can be off-putting despite unscented label"
"Stings noticeably on broken, cracked, or freshly shaved skin"
"Tube size runs out quickly when treating large body areas"
"Can feel heavy in humid weather or on less dry body areas"
