How long does hydroquinone 4 take to work?

How long does hydroquinone 4 take to work?

It takes about four weeks on average for the ingredient to take effect. It may take several months of consistent use before you see full results. If you don’t see any improvements within three months of OTC use, talk to your dermatologist.

How effective is 4 hydroquinone?

The results of this study show that 4% Hydroquinone and 0.75% Kojic Acid + vitamin c 2.5% are effective topical hypopigmenting agents in the treatment of facial melasma. However, 4% Hydroquinone is a better topical hypopigmenting agent with rapid rate of clinical improvement when compared to 0.75% Kojic Acid cream.

Is hydroquinone 4% FDA approved?

Currently, only one prescription product, which contains 4% hydroquinone along with two additional active ingredients, has been approved by the FDA.

Does hydroquinone work forever?

Hydroquinone is not considered permanent. The skin color can come back. However, there are permanent ways to de-pigment the skin.

How long does hydroquinone 8% take to work?

On average, it takes four to eight weeks for hydroquinone to produce noticeable skin lightening results, meaning you’ll need to apply it consistently before your melasma-affected skin begins to lighten and match the rest of your face.

Can hydroquinone cause liver damage?

Apart from its effects on the skin, hydroquinone has been found to expose users to acute toxicity from oral exposure and it can also cause diseases such as thyroid disorder, leukemia, and liver damage.

Why is hydroquinone bad?

Excessive hydroquinone concentrations may induce toxic or shocking effects on melanocytes, forcing them to regroup and increase their melanin production (resulting in rebound hyperpigmentation). Additionally, high concentrations of hydroquinone may provoke skin inflammation.

Can you stop using hydroquinone?

Sometimes it may take longer to see any change, but if no bleaching effect is seen after three months of treatment, you should stop using hydroquinone. To increase the effectiveness of hydroquinone, you should stay out of the sun, or wear protective clothing and use an SPF15+ sunscreen when outdoors.