Tex. Health and Safety Code § 146.012

(a) A tattooist may not tattoo:

(1) except as provided by Subsection (a-1), a person younger than 18 years of age; or

(2) a person who the tattooist suspects is under the influence of alcohol or drugs.

(a-1) A tattooist may tattoo a person younger than 18 years of age if:

(1) the tattoo will cover a tattoo that contains:

(A) obscene or offensive language or symbols;

(B) gang-related names, symbols, or markings;

(C) drug-related names, symbols, or pictures; or

(D) other words, symbols, or markings that the person's parent or guardian considers would be in the best interest of the person to cover; and

(2) the person has obtained consent from the person's parent or guardian to cover the tattoo.

(b) The consent required by Subsection (a-1) may be satisfied by the individual's parent or guardian:

(1) being physically present at the tattoo studio at the time the tattooing is performed;

(2) executing an affidavit stating that the person is the parent or guardian of the individual on whom the tattooing is to be performed;

(3) presenting evidence of the person's identity to the person who will perform the tattooing; and

(4) presenting evidence of the person's status as parent or guardian of the individual who will receive the tattoo.

(c) A person younger than 18 years of age commits an offense if the person falsely states that the person is 18 years of age or older or presents any document that indicates that the person is 18 years of age or older to a person engaged in the operation of a tattoo studio. An offense under this subsection is a Class B misdemeanor.