Hyaluronic Acid and Lactic Acid: Two Skincare Ingredients With Different Benefits

Good skincare is not about using every ingredient you come across. It is about understanding what your skin needs and choosing products that support those needs. Some ingredients focus on hydration, while others help smooth the skin by removing dead cells. Hyaluronic acid and lactic acid are great examples of two ingredients that can serve very different purposes in a skincare routine.

Hyaluronic acid is best known for attracting and holding moisture, helping the skin feel softer, smoother and more hydrated. Lactic acid, on the other hand, is an alpha hydroxy acid that gently exfoliates the skin while also offering hydrating qualities.

Twinkles Beauty has dedicated collections for both ingredients, making it easy to discover products containing hyaluronic acid and lactic acid.

What Is Hyaluronic Acid?

Despite having the word “acid” in its name, hyaluronic acid is not an exfoliating acid. It is a naturally occurring substance found in the body, including the skin, and it works as a humectant. This means it attracts and holds water, helping the skin maintain moisture.

This is one reason hyaluronic acid appears in so many modern skincare products. It can be found in serums, moisturisers, eye creams, masks and other formulas designed to provide hydration.

When the skin is well hydrated, it can look plumper and smoother. Fine lines caused or accentuated by dehydration may also appear softer.

Hyaluronic acid can be particularly appealing when your skin feels:

It is also a versatile ingredient that can fit into routines for many different skin types.

Hydration is one of the foundations of comfortable, healthy looking skin. Even people with oily skin can experience dehydration, so using a moisturising ingredient does not necessarily mean choosing a heavy product.

Hyaluronic acid works by helping the skin hold onto water. Different forms and molecular sizes can be used in skincare formulations, with some remaining closer to the skin's surface while others can interact with different layers.

This gives formulators plenty of flexibility when creating hydrating products.

Hyaluronic acid is also easy to pair with other skincare ingredients. It can appear alongside vitamin C, vitamin B3, peptides, ceramides and exfoliating acids in carefully formulated products.

The goal is simple: help keep the skin comfortable and moisturised while other ingredients address additional concerns.

What Is Lactic Acid?

Lactic acid is an alpha hydroxy acid, or AHA, used in skincare for exfoliation. It helps loosen dead skin cells on the surface, allowing them to shed and revealing smoother looking skin underneath.

Unlike hyaluronic acid, lactic acid is an exfoliating ingredient. It can be found in products such as serums, toners, masks, peels and body lotions.

One interesting feature of lactic acid is that it also has humectant properties. This means it can help attract moisture while exfoliating, making it a popular choice for people who want smoother skin without relying on a harsher exfoliating approach.

Lactic acid may be used to improve the appearance of:

Its larger molecular size means it does not penetrate as deeply as glycolic acid, which is one reason it is often considered a gentler AHA.

Why Choose Lactic Acid?

Skin can start to look dull when dead cells accumulate on its surface. Lactic acid helps remove some of this buildup, leaving the skin feeling smoother and looking fresher.

It can also be useful for body care. Some body lotions use lactic acid to address dry, rough and bumpy skin while providing moisture at the same time.

For example, Twinkles Beauty features Amlactin body lotions containing lactic acid, including formulas designed for dry and rough body skin. One product contains 12% lactic acid alongside glycerin, combining exfoliation with moisturising care.

Another Twinkles Beauty body lotion combines 7% lactic acid with vitamin C and is formulated around exfoliation, brightening and hydration.

This shows that lactic acid is not limited to facial skincare. It can also become part of a body care routine.

Hyaluronic Acid vs Lactic Acid

Although both ingredients contain the word “acid”, they have very different roles.

Hyaluronic acid focuses on hydration. It helps attract and retain water, which can leave the skin feeling softer and looking plumper.

Lactic acid focuses more on exfoliation. It helps remove dead skin cells while also providing some hydration.

Someone with dehydrated skin may enjoy a hyaluronic acid serum or moisturiser. Someone dealing with rough texture or dull looking skin may prefer a product containing lactic acid.

Can You Use Both?

Hyaluronic acid and lactic acid can complement each other nicely.

Since hyaluronic acid is focused on hydration and lactic acid is an exfoliant, they can have different roles within the same routine. In fact, some skincare products already combine exfoliating acids with hydrating ingredients.

Using a hydrating product after exfoliation can help your routine feel more comfortable. The American Academy of Dermatology also lists both hyaluronic acid and lactic acid among ingredients that can be useful in skincare for dry skin, depending on the formulation and individual needs.

That said, lactic acid should still be introduced gradually. Even though it is considered one of the gentler AHAs, it can cause stinging, redness, peeling or increased sensitivity when used incorrectly.

How to Build a Routine With These Ingredients

A simple routine can be enough.

In the morning, you might use:

  1. A gentle cleanser
  2. A hyaluronic acid product
  3. Moisturiser
  4. Sunscreen

Lactic acid can be introduced according to the instructions on the individual product, often as part of an evening routine.

When starting an exfoliating acid, avoid immediately combining it with several other exfoliating products. Giving your skin time to adjust makes it easier to see how it responds.

Sunscreen is also important when using AHAs because these ingredients can increase sensitivity to sunlight.

Hyaluronic acid and lactic acid prove that skincare ingredients do not have to perform the same job to work well within a thoughtful routine. Hyaluronic acid brings a welcome boost of hydration, while lactic acid helps clear away surface buildup and improve the appearance of texture. You might prefer one, use both at different stages or choose a product that combines several complementary ingredients. The important part is understanding what you are putting on your skin, introducing active products gradually and choosing formulas that suit your needs. With the right balance of hydration and gentle exfoliation, your routine can leave your skin feeling softer, smoother and much more comfortable.