Lye & Soap AdditivesNurture Soap

Nurture Soap Sodium Lactate Liquid

92
4.6/5

Nurture Soap's sodium lactate liquid is a reliable, no-fuss additive that consistently firms up cold and hot process soap bars, cutting down cure-adjacent frustrations…

  • Faster unmolding times
  • Harder, sturdier bars
  • Small dose needed
  • Concentration60% sodium lactate solution
  • Recommended Usage1 tsp per lb of oils
  • Container Size8 oz / 16 oz bottle

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Overview

What it is & how it performed

Nurture Soap sodium lactate liquid is a purpose-built additive crafted specifically for soap makers who want firmer, longer-lasting bars right out of the mold. Derived from a fermented sugar source and neutralized to a food-grade, skin-safe standard, this liquid form of sodium lactate dissolves instantly into your cooled lye solution, eliminating the hassle of measuring out crystals or worrying about clumping. Soap makers who work with cold process, hot process, or even melt and pour occasionally reach for this ingredient because it noticeably speeds up the hardening process, allowing bars to be unmolded sooner and handled with more confidence during the early, fragile curing stages.

What sets this particular sodium lactate apart is its reliability and ease of incorporation into a wide range of recipes, from high-lard bars to luxurious tallow blends to vegan oil combinations. Because it is already in liquid form, there's no need to dissolve powder separately, which saves time during batch prep and reduces the risk of undissolved granules affecting your bar's texture. A small percentage added to your water phase, typically around one teaspoon per pound of oils, is enough to produce a noticeably harder, more durable bar that resists mushiness, softens less in the shower, and holds crisp lines and details from intricate mold designs far better than soap made without it.

Beyond hardness, this additive is prized by soap makers for its role in improving the overall finished quality of a bar, including easier release from silicone and wooden molds, reduced curing time before bars are ready for sale or gifting, and a smoother, more refined bar surface with fewer air bubbles or soft spots. It is especially popular among crafters making high-percentage liquid oil soaps, salt bars, or in-mold swirled designs where structural integrity is essential for clean cuts and lasting shape. Reliable, easy to use, and formulated with the needs of soap makers in mind, Nurture Soap sodium lactate liquid has become a staple additive in many soap making workshops, valued for the consistent, professional-quality results it helps produce batch after batch.

Key features

  • 60% sodium lactate solution derived from fermented sugar
  • Formulated specifically for cold process and hot process soap making
  • Speeds up unmolding and cutting time
  • Increases bar hardness without altering lather
  • Also usable in liquid soap for clarity boost
  • BPA-free bottle with easy-pour cap

Specifications

Spec sheet

Concentration
60% sodium lactate solution
Recommended Usage
1 tsp per lb of oils
Container Size
8 oz / 16 oz bottle
Solubility
Fully water-soluble
Shelf Life
Approx. 1-2 years unopened

Bench scores

How it scored on the bench

92
Purity8.9
Consistency9.3
Value8.9

Pros & cons

The good and the fiddly

What we liked

  • Noticeably harder bars within 24 hours
  • Small dose required, bottle lasts many batches
  • Works well in both CP and HP soap
  • Helps high-liquid or slow-moving recipes unmold faster
  • Doesn't affect scent or color of finished soap
  • Reasonably priced compared to competitors

Watch out for

  • Must be added to cooled lye water, extra step
  • Overdosing can make bars too brittle
  • Some bottles arrive with inconsistent fill levels
  • Not as effective on very high-liquid superfat recipes
  • Shelf life shorter than powdered sodium lactate

Maker reviews

What other makers say

Unmolds like a dream

I used to wait two extra days before I could unmold my loaves. With just a teaspoon per pound of oils, I'm cutting bars the next morning. Texture is smooth, no lather issues.

MTMarissa T.Feb 2024
Great but measure carefully

Works exactly as described for hardening bars. I over-poured once and got a slightly brittle batch, so precision matters. Still repurchasing.

DKDeShawn K.Nov 2023
Staple in my soap room now

Been making cold process soap for six years and this is now a permanent part of my lye water routine. Bottle lasts forever since you only need a little.

LPLinda P.May 2024
Good value

Cheaper than some competitor brands and performs the same. Only wish the bottle had measurement markings on the side.

OROmar R.Aug 2023
92

The verdict

Nurture Soap Sodium Lactate Liquid

Nurture Soap's sodium lactate liquid is a reliable, no-fuss additive that consistently firms up cold and hot process soap bars, cutting down cure-adjacent frustrations like soft edges and slow unmolding. For the price and ease of use, it's a staple worth keeping in any soap maker's lye station.

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Nurture Soap Sodium Lactate Liquid4.6/5 · Nurture SoapCheck price