Dr Althea 345 Relief Serum (2026) Review Run by a Sensitive Skin Type and Its Performance?

Building Healthy Skin Begins with a Strong Skin Barrier. But daily environmental aggressors, such as pollution and UV rays, stress, abrasive skincare, and changing climates can compromise the skin barrier’s natural defenses against dryness, redness/irritation (atopic dermatitis), and dehydration. That is what makes barrier-repair skincare dense with its banging rise in popularity over the years, particularly among sensitive skin types.

The Dr. Althea 345 Relief Serum is one product that has been making waves in the K-beauty community. Formulated to calm sensitive skin and deliver nourishing moisture at a deeper level of the epidermis, this serum is lightweight yet promises to bolster the skin barrier while promoting stronger, healthier skin without greasy or heavy residue.

This full review is going to cover everything from Dr. Althea 345 Relief Serum ingredients and benefits to how it works, how you should use it, plus the pros and cons.

What is The Dr Althea 345 Relief Serum?

Dr. Althea 345 Relief Serum is a Korean serum designed to soothe sensitive skin, replenish moisture and repair the skin barrier. With a lightweight formulation that quickly absorbs for hydrated skin without the heavy or sticky feel.

This serum, unlike the former treatment serums we know — that focus on anti-ageing or pigmentation— is engineered to address skin irritation and dehydration as well as damage to the barrier. Perfect for daily use and best in morning and evening skin routine.

Its gentle formula is safe for nearly every skin type, be it dry, oily, normal or sensitive.

Key Ingredients

One of the main reasons why Dr. Althea 345 Relief Serum is so popular is precisely because of the selection of its ingredients.

Ceramide NP

Ceramides are natural lipids that the skin needs. Eh — they assist to fortify the skin barrier, reduce moisture loss, and shield the dermis from environmental paintings stressors.

Panthenol (Vitamin B5)

Panthenol Soothing and moisturizing properties. It minimizes irritation focusing on hydrating the skin barrier better.

Tea Tree Leaf Water

Tea Tree Leaf Water works as a skin refresher and may aid in oil balance, making the serum ideal for oily skin types, acne-prone skin, and combination types.

Opuntia Ficus-Indica Stem Extract

It gives moisture and nutrition & helps the skin feel soft!

Botanical Soothing Ingredients

The formula also includes green tea-both a soothing and redness-reducing agent, supporting the look of irritated skin.

How does Dr Althea 345 Relief Serum work?

The action of the serum relies on three key mechanisms.

One, it provides a lightweight dose of instant moisture that easily absorbs into the skin.

Second, ingredients such as Ceramide NP and Panthenol which strengthen the barrier that prevents moisture loss in the skin.

Last but not least, its calming botanical ingredients help soothe visible redness and discomfort (bonus: brightening up a more even looking complexion).

Over time, the skin is likely to become softer, smoother and more resilient to external irritants.

Pros of Dr Althea 345 Relief Serum

Using this serum on a regular basis might provide multiple skin benefits, such as:

.Deeply hydrates the skin.

.Helps strengthen the skin barrier.

.Reduces dryness and tightness.

.Soothes irritated and sensitive skin.

.Assists to reduce the look of redness.

.Absorbs quickly without feeling greasy.

.Makes the skin soft and smooth.

.Great layering underneath moisturizer and sunscreen.

.Suitable for daily use.

.Compatible with Most Skincare Routines

Who Should Use This Serum?

Who is Dr. Althea 345 Relief Serum made for?

.Sensitive skin

.Dry skin

.Combination skin

.Dehydrated skin

.Acne-prone skin

.Skin barrier function is compromised

.People with seasonal dryness or irritation

.Lightweight in consistency, even oily skin types can benefit from this serum.

Who Should Avoid It?

The serum is suitable for sensitive skin, so you may want to steer clear or patch-test if:

You have a documented allergy to any of the ingredients.

Your skin feels effortlessly reactive to herbal extracts.

You have serious skin problems that need treatment.

Important: Always patch test any new skincare product.

Directions to Use of Dr. Althea 345 Relief Serum

The best method is as follows:

Cleanse your face thoroughly.

If it is your routine, you should apply toner.

Apply 2–3 drops of the serum.

Apply a layer over your face and neck.

Pat until fully absorbed.

Follow with a moisturizer.

Apply sunscreen during the daytime.

This serum can be used morning or night.

When Can You Expect Results?

The hydrating effects from taking alkaline water are often experienced straight away, usually within the first couple of days.

On the flip side, building a better skin texture and barrier as well as overall skin comfort usually takes four to eight weeks of use. Results may differ due to your skin type, concern concerns, and total skincare routine.

Possible Side Effects

Dr. Althea 345 Relief Serum is mostly for gentle use.

However, some individuals may experience:

Mild irritation

Temporary redness

Allergic reactions to specific ingredients

However, stop using and get in touch with a skin doctor if irritation continues.

Pros

.Lightweight, non-sticky texture

.Fast absorption

.Suitable for sensitive skin

.Helps support the skin barrier

.Provides long-lasting hydration

.Convenient to stack with other skin care items

.Suitable for daily use

.Comfortable under makeup

Cons

.Not directly for the treatment of dark spots

.Does not act as a replacement for anti-aging products such as retinol.

.Results require consistent use.

.Individual results may vary.

.Althea 345 Relief Serum vs Other Serums

But for a basic straightforward product specifically aimed at skin barrier repair and calming down irritation, the Dr. Althea 345 Relief Serum is great in my opinion.

But if your focus is on brightening hyperpigmentation, a Vitamin C serum would likely be the way to go.

There is a better option for wrinkles and fine lines: think retinol serums.

The most ideal form of serum to choose depends on your skin concerns and not necessarily the skincare trends.

Frequently Asked Questions

Can Dr. Althea 345 Relief Serum be used in daily occasions?

Yes. It is gentle enough to be used both morning and evening.

Can oily skin use this serum?

Yes. Its lightweight consistency is best for oily and combination skin types.

Contains Vitamin C[as more people are now aware vitamin C has anti-fungal properties]Is it good for acne-prone skin?

Yes. While the product has a good reputation for helping people with acne-prone skin, your experience of this powerful serum may be different.

Does it help with dark spots?

It primarily works to calm and hydrate the skin and help restore the skin barrier. This is not a whitening cream in particular for pigment fading.

Can beginners use it?

Absolutely. However, its gentle formulation makes it a good choice for almost any skincare routine, especially if you are new to chemical exfoliating

Final Verdict

Dr. Althea 345 Relief Serum is another serious choice if you want a gentle Korean serum that promotes hydration, skin barrier support and soothes sensitive skin. Matte Finish MAKING SENSE Its lightweight texture, barrier-supporting elements, and soft finish means it’s grade-A for day-to-day use on many skin types.

Not that it is meant to be a major brightener of pigmentation or anti-wrinkle rage but used as an everyday gel/serum hydrator and soother, in between those more powerful steps. Together with a good skincare routine, it can help support a more comfortable, resilient and healthy-looking skin over time.

On the whole, Dr. Althea 345 Relief Serum is a middle-of-the-road option with respect to barrier-repair serums anyone who wants something straightforward that supports hydration and skin comfort